Bai Yushi also stated that this was a personal feud between Zhou Heng and the Ying Family, not a foreign enemy. It was not included in their agreement to unite against common threats, so he chose to stand by idly.
These two Old Ancestors were originally worried that once Ying Cheng'en also advanced to the Nascent Soul Realm, the Ying Family's strength would inflate to an uncontrollable level, forcing the other two families to make significant concessions.
Now that Zhou Heng had emerged, Bright Moon Country witnessed the rise of a fourth Nascent Soul Realm Old Ancestor, which naturally could greatly suppress the Ying Family. Although the Ying Family still held a dominant position, it was better than having one family overwhelming the others.
All three were cunning old foxes, naturally understanding each other's thoughts. Ying Tianyin's expression was icy, but he couldn't possibly command Mei Songtao and Bai Yushi; he just snorted lightly.