C22 Yin-yang Mixed Sky Umbrella

The clock on the second floor of the new Universe Building was already close to five in the morning, and dawn was approaching. Sima Ming sat on the desk in the office, slowly inspecting the weird old oil-paper umbrella in his hands. He didn't know why, but he had a strange feeling that this oil-paper umbrella that floated from who knows where was there to help him, otherwise