Douyin

Douyin is the Chinese short-video platform operated by ByteDance, known internationally as TikTok . The platform's content ecosystem is heavily video-driven — as one industry analysis noted, "打开抖音是视频" (open Douyin and it's video) — reflecting how most information on the platform is delivered through dynamic, multimodal content rather than text .

The platform served as a launchpad for several notable entrepreneurs. Yu Beichuan, founder of AI startup Index Gravity (指数引力), was an early core member of Douyin who helped build its social features during the platform's growth from tens of millions to 600 million daily active users . More recently, Jekka AI — an AI agent company serving enterprise clients across e-commerce, logistics, and unmanned retail — became one of Douyin's first official model providers, alongside Youzan .

: 《Becoming China's Most Daily-Interaction Heavy AI Company: 15 Things MiniMax Got Right》 — 暗涌Waves — published 2024-09-02

: 《Hongshan's Seed Fund Backs New Startup Building an AI-Powered LinkedIn》 — 暗涌Waves — published 2025-09-20

: 《From Sierra to Jekka: The Boundaries of AI, Large-Scale Practice, and the Endgame》 — 真格基金 — published 2025-10-27