He worked for his father at the age of 2, and Musk issued a work card to his son.

Elon Musk, Twitter's new boss, has a "new employee", his 2-year-old son X. Moreover, Musk solemnly sent his son a tweet work card.

Musk shared a set of photos of X playing near Twitter's San Francisco headquarters last year with his son X on Thursday local time, which appeared to have been taken near a heart-shaped sculpture in Union Square in San Francisco. "X is in beautiful San Francisco." Musk wrote on Twitter.

Musk played with X in San Francisco and, more interestingly, Musk shared a photo of X's Twitter work card. The above simply says an "X", and the following three dots represent the position of the two-year-old in the company. This is not the first time Musk has brought X to the Twitter office. Musk took X with him when he completed his acquisition of Twitter and visited Twitter's headquarters in San Francisco for the first time in October.

The full name of the son of X's Twitter brand Musk, usually referred to as X for short, is the son of Musk and female singer Grimes, whose real name is Claire Claire Elise Boucher. Musk has nine children, including the daughter he and Grimes gave birth to through surrogacy last year, their second child.