Old Master Cao did not come from a privileged background and was born in an ordinary family. Later on, he worked as a waiter in a restaurant and met his benefactor there. After that, he became an apprentice in a pawnshop. He was diligent and quick-witted, so he quickly became the manager of the shop. As time passed, he also fell in love with antiques and calligraphy. When someone came to pawn valuable things, he would hide them.
Later on, Old Master Cao hid everything he had and only kept a few of his most precious jade artifacts with him. After being displaced and wandering around for half a year, he finally moved into this part of the Xia family's house. He originally thought that he could live in peace for a few years, so he had placed the items inside the wall of the main room. Now that the house had collapsed, the jade were all gone.