Zhang Muchen

Zhang Muchen was born on January 1, 2025, in Taiwan. His birth information was publicly announced on that day by his mother, Ouyang Nini's, agent. He was given the nickname "Little Dragon Brother". Reports from the day of his birth noted that his mother shared a photo of the family in the delivery room on social media on January 6, and revealed that his nickname at birth was "Mumu". On January 17, 2025, Ouyang Nini publicly released a frontal photo of Zhang Muchen, and media outlets assessed his facial features and double eyelids to be similar to his mother.

Regarding his family background, Ouyang Nini and Zhang Shuhao registered their marriage in July 2024. On September 14 of the same year, Ouyang Nini posted pregnancy ultrasound photos and a baby bump picture on social media, confirming her pregnancy. Zhang Shuhao revealed in October that the estimated due date was in early January 2025, and expressed his desire to cut the umbilical cord himself. In November 2024, the couple publicly announced the gender of their fetus at a gender reveal party, confirming they would have a boy. On January 1, 2025, Zhang Shuhao's agent further confirmed that Ouyang Nini had successfully given birth.

As for the origin of his name, in March 2025, Zhang Shuhao mentioned in an interview that the name "Muchen" was suggested by elders and calculated by a professional, ultimately chosen because the family favored the character "Mu" (睦). He was unaware at the time that actress Chen Yanxi's son was also named "Muchen".

Family members include his father, Zhang Shuhao, and his mother, Ouyang Nini. His extended family also features his maternal aunt, Ouyang Didi, and Ouyang Nana, as well as his maternal grandfather, Ouyang Long, and maternal grandmother, Fu Juan. The family relationships and related member information have been reported in public coverage.