It couldn't be helped. Both Le Ye and Lin Youlan were strongly recommended by Li Muyao. Chu Jixing was supposed to be the one who helped pull the strings, but Gao Wu learned about it from Chu Jixing's eldest daughter, Chu Ranran.
It wasn't Chu Ranran's idea to invite Le Yezhou and Lin Youlan. It was Li Muyao's idea. It was also her strong recommendation and determination that allowed Lin Youlan and Le Yezhou to act in Gao Wu, a comedy that was not looked upon well by their peers.
Moreover, Gao Wu didn't contact Chu Ranran and Chu Jixing Entertainment for follow-up questions. Instead, he contacted Li Muyao's Dream Come True company.
As the director and screenwriter, Gao Wu naturally understood how important Li Muyao's position in the movie was. No one could take away the credit that should belong to Li Muyao, not even a big company like Chu Jixing.