In a lawsuit, Katie Ellen Puris said corporate leaders believed that she "lacked the docility and meekness specifically required of female employees."
The restrictions are Beijing’s latest efforts to attempt to limit internet addiction, a problem it views as widespread among its youth.
The move is a major escalation amid national security concerns about the popular Chinese-owned social media app.
The Senate Intelligence Committee's letter to the Federal Trade Commission on TikTok comes after a BuzzFeed News report on TikTok user data access in China.
ByteDance on Sunday said it was unaware of President Trump's plan to use $5 billion from the company's sale to fund so-called "patriotic education" in the U.S.
Some countries have banned the Chinese short-form video-sharing app because of privacy and security concerns, and the U.S. may follow suit.