24h transit elegibility with two stops

Hello, I’m a panamanian citizens and I’ll be flying to Bali From Los Angeles with xiamen Airlines, there is one technical stop in Qingdao for about two hours before getting to Xiamen airport, and 8:40hr layover in xiamen airport before heading to Bali. Would I need a visa or is this eligible for transit without it.
I’ve read about people being denied to board by Xiamen Airlines because of the lack of a transit G.