While there is nothing wrong with Inside Out 2's gross in China per se, it was very clearly made with an American audience in mind. Likewise, Ne Zha 2 was made with a Chinese audience in mind ...
making $2,923,706,026 in lifetime gross at the box office. While Inside Out 2 might have inched out The Avengers, the 2019 MCU film Avengers: Endgame holds the #2 spot, making $2,799,439,100.