The CEO and co-founder of TikTok’s owner ByteDance has announced he will step down and transition to a new role by the end of the year.

In a letter to employees on the company’s website, Zhang Yiming said “The truth is, I lack some of the skills that make an ideal manager. Similarly, I’m not very social, preferring solitary activities like being online, reading, listening to music, and contemplating what may be possible.”

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