I know this best. Haha, it's right in front of my house, above Yulong food market, 80 meters north of the intersection of Tongfeng Road and Zhutang Road. You should see their signboard when you walk on the road, which seems to be "Kunshan is like a medical instrument". I don't know how many times I have to walk that road every day. It can't be wrong. I will attach a photo to you. Many old people in our community go there to experience it, and so does my mother.