There are trains and planes from Zhengzhou to Chengdu, and no matter where you go to Chengdu, you'd better get on the bus at Xinnanmen Station, which is the tourist distribution center, because there is a through train to Emei Mountain Scenic Area, and then you can reach Emei Central Station (this is not the urban area, and it costs one yuan to get to the urban area by bus or taxi), or you can go to Guobao Temple Scenic Area (after passing through the urban area, you need a bus or taxi from 1.5 yuan to get to Guobao Temple).