How many mysterious characters are there to celebrate the passing of the year?

The mysterious figures in Qing Yu's year were Ye Qingmei, Wu Zhu, and the Shadow. Among them, Ye Qingmei was the mother of the main character, Fan Xian. She founded the Overwatch Council and the world's number one business. She possessed modern technology and a desire to make the world equal. Wu Zhu was Ye Qingmei's servant. His martial arts were unfathomable and he was one of the hidden great grandmasters. The shadow was a mysterious character. His identity and true face had never been revealed. These mysterious characters played important roles in the play, adding suspense and mystery to the plot. According to the information provided, there were three mysterious figures in Qing Yu Nian.