When did the emperor know that Jiu Feng was going to save Julia Ti?

Di Jun told him what Jiu Feng had done to him in return for his kindness. He knew that the Nine Summit would save Julia Tee. Your Highness told him that Jiu Feng not only worked as a maid in heaven to repay his kindness, but also sold his fur to Nie Chuyin and followed him to rob him. At this time, Di Jun knew that Jiu Feng had done so much for him.