If you are going to Xi'an, China, to see the Terracotta Warriors and Horses of Qin Shihuang, remember to take a bus code "A" and queue up at the bus stop to buy tickets.
如果你要去中国西安看秦始皇兵马俑,记得要坐(代号为)“游5A”的公交车,并在公交车站排队买票。
Why do I give such a detailed introduction? Because in front of the stop sign, there is a bus terminus, in which there are both Tour No. 5 and informal tourist cars (blue). When queuing up, people in uniform will greet nearby: "Go to this side of the terracotta warriors and horses, do not queue up."