Just as Gao Yang said, he was very upset, so he needed to find a way to vent a bit. Naturally, when he couldn't think of what to do after pondering for a while, suddenly he recalled something he wanted to do but hadn't gotten around to and had forgotten - that was to go on a gym challenge.
Los Angeles is the second-largest city nationwide, and Los Angeles has Hollywood, so Los Angeles has many taekwondo gyms.
Gao Yang was too lazy to go elsewhere anymore; he urgently wanted to vent his depression. So, he decided to start his gym challenge in Los Angeles.
He had to wait until Yelena's class was over, and Li Jinfang and the others wouldn't be able to set off until evening at the earliest, so Gao Yang had a lot of time to prepare.