The two men were acting like two aunts bargaining at a food stall in Li Yunmu's heavenly world. One of them wanted to throw the things while the other one wanted to keep them. Fortunately, the other residents of the heavenly world couldn't see them, or Li Yunmu's prestige would have dropped by a lot.
At that moment, he was completely relaxed though. He always appeared as a cold and indifferent person in front of others, but for some reason, he displayed his original nature in front of Heavenly Emperor Ryukyu.
It was most likely due to trust, however. Ryukyu had helped him like a teacher without any ulterior motive or greed for his treasures. He didn't have any bad thoughts in regards to his student.
Li Yunmu considered Heavenly Emperor Ryukyu as the most trusted person apart from his parents and elder sister, so he didn't have any vigilance toward him and returned to the carefree days of Earth.