The Haidilao West Street Store you mentioned is located in West Street, next to Beijing Tongrentang, about 300 meters east of Erqi Square, and Lunan will do! It's convenient to take a bus. I wonder where you are in Zhengzhou? No.85, No.60, No.35, No.51and many other buses can arrive! It is also convenient to take a taxi! I hope my answer can help you!