After ByteDance 2.0 flooded the screen, I have been curious all along: how many pieces of chess did Zhang Yiming hide for this product? This model will start from three years ago. In 2023, shortly after ByteDance established its Seed team, it quietly launched an AI video generation project. At that time, the generated content was completely unreadable, with a picture quality that was as blurry as a phone from ten years ago. The team felt they couldn't handle it, so the project was kept hidden for two years. In the same year, Fantasia Quantitative founded Deepseek, and two teams started simultaneously, one focused on making videos and the other on language models. The turning point is in early 2025. Former Google Fellow Wu Yonghui joined to take over Seed and reported directly to Liang Rubo. Half hidden Zhang Yiming has also returned to the front line, flying to Beijing every third week to attend review meetings. I have previously communicated with a friend of ByteDance, Zhang Yiming really personally reads papers and learns techniques every day, and most of the time stays up late in the office. A company with 120000 employees, with two top decision-makers keeping an eye on it simultaneously. In April, AI Lab was merged into Seed, Seedance 1.0 was unveiled in June, and audio generation was added to 1.5 Pro in December. Then on February 7th of this year, 2.0 was quietly launched as a dream without a press conference or preheating. As a result, the Internet was blown up in 48 hours. Feng Ji, the producer of Black Myth: Wukong, said that it was "the strongest on the surface of the earth". Tim, the film and television hurricane, sent videos overnight to shout terror. Overseas foreigners are asking Chinese people to help recharge Seedance, and it is said that they can earn 20000 yuan in two days. From an unseen internal prototype to a phenomenal product, it took three years, but it only took eight months for it to truly explode. ByteDance's strategy is to break Seed down into completely independent departments and create a startup company within an organization of 120000 people. DeepSeek proved that small Chinese teams can lift tables, and Seedance proved that large Chinese companies can too. From 2025 to 2026, for two consecutive years, Chinese AI will shake the world in the same time window, which is really not luck.