One brief becomes
a narrated presentation video

Let's dive into the sea of Jeju's haenyeo. We'll look at the diving technique, then at how the community manages the sea, and finally choose one practice to carry on today.
How do they harvest underwater without an oxygen tank? A breath-hold dive lasts about a minute, at a depth of five to ten meters. Muljil is the technique of harvesting abalone, sea snails, and seaweed in that time.
Muljil is not only the work underwater. They check the sea weather and the tides and prepare the tewak float and the mangsari net. They dive and harvest, and at the surface they regulate their breathing with the sumbi sound. After the harvest, the fishing-village cooperative weighs the catch together.
The haenyeo community manages the village fishing grounds together, centered on the cooperative. They set closed seasons and leave young sea snails alone. They also plant seaweed to tend the grounds.
Let's compare the number of registered haenyeo by region. Jeju City fell from 2,520 to 1,680, and Seogwipo City from 1,790 to 1,210. Udo fell from 320 to 190, and Chuja Island from 95 to 52. All figures compare 2015 with 2024.
Now let's look at the age composition in 2024. Those in their seventies and older are the largest group at 61 percent. Those in their sixties are 29 percent, and those in their fifties and younger are 10 percent. Passing the knowledge of muljil and the community on to the next generation matters.
The haenyeo school graduate evaluation shows several areas of learning. Breath control scores 85, stamina 70, and harvesting technique 92. Safety rules score 78 and traditional knowledge 65. These are 2024 averages out of 100 for the graduates, not scores for all haenyeo.
Haenyeo culture has carried on through the ages. Late Joseon records mention jamnyeo, the diving women. In the 1930s there was the haenyeo anti-Japanese movement, and in the 1970s rubber wetsuits spread. In 2016 the culture was inscribed as UNESCO Intangible Cultural Heritage of Humanity.
What the haenyeo have protected is the pace at which the sea is used. We can carry it on too. Buy seasonal seafood in smaller amounts, join a beach cleanup once, or tell one person the haenyeo story. Choose one of these to practice today.

Sunshine class, when you feel angry, let's try it with our feelings traffic light friend. Stop: open your hands. Breathe: blow out, whoo. Talk: tell me how you feel.
Shall we look at our class's feelings weather? Eleven friends felt happy and five felt angry. Three felt sad and one felt scared. So angry feelings were in our class too.
When you're angry, how can you get your feelings across? If you throw, shout, or push, your friend gets hurt and you feel bad too. If you say it in words, your friend knows how you feel.
Now shall we follow the traffic light friend? Red light: stop. Squeeze your fists tight, then open them wide. Yellow light: breathe. In through your nose, and a long whoo out through your mouth. Do three balloon breaths. Green light: talk. "I'm upset because my blocks fell down." Say what happened and how you feel.
Sophie in the picture book gets angry too. Sophie climbs a tree and listens to the wind. Then her heart calms down. Shall we try a balloon breath right here?
Shall we look at what the teacher wrote down? Fights with friends went from nine in the week before practice to four in the second week of practice. Throwing blocks went from six times to one. Let's keep practicing together.
A friend knocked over the blocks you built. What should you do? Throw the blocks? Push your friend? Or follow the traffic light? Think for a moment. The traffic light friend would say: red light, stop. Yellow light, balloon breath. Green light, say "I'm upset because my blocks fell down. Let's build them again together."
Let's make a promise with our feelings traffic light friend. When you're angry: stop, breathe, talk. Tonight at home, practice three balloon breaths with mom and dad. Next week we'll learn together about our feelings when we're sad.

Of the 3,000 bottles of the SEORI 2027 vintage, 1,200 are allocated first to invited partners. Today I will present the value of the brewing, the sales and award record behind it, and the launch and allocation process.
SEORI's value begins with ingredients, time, and limited quantity. At a brewery 700 meters above sea level in Pyeongchang, we use organic glutinous rice and 100 percent house-made nuruk. Every step is done by hand, and after 72 days of low-temperature fermentation we produce only 3,000 bottles a year.
Let me separate the sales record from the plan for the new vintage. The first vintage in 2025, 1,800 bottles, sold out in 11 days at an average price of 180,000 won. The 2027 vintage is 3,000 bottles, with a recommended retail price of 240,000 won.
On top of the sales record, here is the award history. At the 2026 IWSC, the International Wine and Spirit Competition, it won a gold medal with 93 points, and the same year it took the top prize in the traditional liquor category at the Korea Wine Challenge.
The price difference is explained by ingredients, time, and limited quantity. A typical premium yakju is 13 percent alcohol, aged 30 days, at an average price of 65,000 won. SEORI is 16 percent, aged 72 days, at 240,000 won, presented together with the brewing conditions above.
The lineup is proposed as three table experiences. SEORI Blanc, at 16 percent, has notes of pear, white flowers, and honey with a long mineral finish, paired with flounder sashimi and scallops. SEORI Rouge, at 15 percent, is infused with omija and has the character of red fruit, paired with hanwoo striploin and duck. SEORI Reserve, at 18 percent, is aged 180 days in oak for vanilla and nut flavors, paired with aged cheese and dried persimmon.
For overseas, I will separate results from targets. The export share in 2025 was 12 percent. The 2027 target is 35 percent, aimed at Japan, Singapore, and Hong Kong. The target figures are not confirmed results.
The launch runs through four moments. Pre-orders open in November 2026, and in December we open pop-ups at two department stores in Seoul. The first export shipment follows in January 2027, and a sommelier masterclass is held in March.
To our invited partners, we propose priority allocation of 1,200 of the 3,000 bottles. Please submit your allocation request by November 15, 2026. You are invited to the December pop-up tasting, and the partner price list will be sent separately. We hope you will join us for SEORI's next vintage.

These are Null Pointer's results from the 2026 High School Hacking Challenge. We'll look at where the points came from, pinpoint where we got stuck, and agree on a winter plan.
First, the final standing. We placed 7th of 48 teams, up 14 places from 21st last year. Our total rose from 620 to 1,220 points, and problems solved went from 6 to 13.
Let's compare each category with the average of all teams. Web hacking was 350 versus 260, and reversing 200 versus 230. Forensics was 420 versus 280, a clear strength. Cryptography was 150 versus 210 and pwnable 100 versus 170, both needing work.
Let's retrace the day. The contest started at 9:00. At 10:40 we got our first flag on a web SQL injection. At 13:20 we solved three forensics problems in a row.
The second half split into solving and stalling. At 15:10 we solved one reversing problem. At 16:30 we got stuck on an RSA cryptography problem, and the contest ended at 18:00.
Let's turn the reasons we got stuck into training tasks. In cryptography we didn't know the RSA small-exponent attack or XOR key recovery. In pwnable we were shaky on the basics of overwriting the return address in a stack buffer overflow and on using pwntools.
The winter plan has three parts. A pwnable study group meets once a week for eight weeks, going from stack overflow to ROP. Cryptography lectures run four sessions: modular arithmetic, RSA, XOR, and hashes. Roles are reorganized into two on web, one on forensics, two on reversing and pwnable, and one on cryptography, and we recruit a new member for cryptography.
Getting better does not move the line. We practice attack techniques only in authorized contest environments and on practice servers. Attacking a real service is a crime.
Now let's prepare for the next contest. The goal is a top-three finish in the Codegate Junior qualifier in February 2027. The tools are Burp Suite, Ghidra, pwntools, CyberChef, and Wireshark. Today, let's agree on the eight-week study group, the four lectures, and the role plan, and assign owners and dates.