Zhang’s net worth has expanded dramatically over the past several years. When Bloomberg first began tracking his fortune in March 2019, it was estimated at $13 billion. Since then, his wealth has increased by more than sevenfold. A major contributor to this growth has been TikTok’s continued popularity worldwide. At the same time, ByteDance’s AI chatbot Doubao has emerged as China’s leading AI assistant, attracting more than 300 million monthly users.