Yesterday, si Hua didn't come home. He called his classmate and the answer he got was, "Si Hua was having fun when si Rong left in advance.
Si zhihan actually knew that si Hua wasn't as kind and bright as he appeared to be. He also knew that si Hua was the one who framed si Rong most of the time, but si zhihan couldn't be bothered to find out the truth. Just as si Rong had said, he had already decided that si Hua was the company's successor, and Si Rong was a sacrificial lamb that she had to listen to. The occasional beating and scolding would make her fear him from the bottom of her heart, so that she could control herself better.
Therefore, even though he knew that si Hua was trying to frame si Rong, si zhihan didn't stop him. Instead-he added fuel to the fire and even confirmed that he had made the right choice-si Rong was no match for si Hua.