It is recommended to go to the hospital. I don’t know the price in Yangzhou. I used to have it done at Jiangdu Huimin Hospital. Your scar-free treatment will probably take about 5 times. Go there every 10 or 15 days. The key is It depends on the depth. It will take about 5 times. I estimate the price to be around 400 (it is recommended not to do it in summer, it is best to do it when the weather gets colder)