A DeepSeek engineer who helped write a key component of the company’s latest model has given his readers a rare insight into work at a Chinese frontier lab — and how China’s workers are contending with AI’s risks.

In a blog post published in Chinese on his public WeChat account titled “I Have No Choice but to Bury My Talent in Yesterday,” Liu Shengyu, an AI developer at DeepSeek, reflected on the strange reality of helping build AI that could eventually make his own specialized skills obsolete.

Liu confirmed to Business Insider that he wrote the post, but declined to comment.

He wrote that, in about a year, AI had gone from a tool that could…