Why does the official certification of Aauto faster make Yao Yao very happy?

Aauto Quicker officially certified Bam Bam to make Yao Yao very happy, because Bam Bam fell in love with Yao Yao at first sight and became popular on the Internet by sending a video of their sweet love. However, Yao Yao was depressed and didn't like to laugh until Bam appeared in her life. They went in both directions, and finally Bam made Yao Yao very happy, which made a faster autopilot official give them two certificates.