Is there any robbery on the Sichuan-Tibet line?

Riding to Lhasa this year, it's best to be accompanied by several tunnels from Litang down from Haizishan to Batang. I live alone and have never met a robber. But I heard that there was a gang of seven people robbing ahead. I don't know if it's true or not. If you want to go, be careful. The chance of meeting each other is still very low ... When I was staying at the Guo Fu Hotel in Litang, I posted a piece of paper in the lobby, so it's best to cross the tunnel with my bike friends. . . In addition, there are indeed many children in the way, holding stones in one hand and clods in the other to hit the wheels. . .