Breakfast at hotel.

Check out and drive for around 20 minutes to visit the Huashan Mysterious Grotto or Huashan Mi Ku ( As it is called in Chinese ) is a series of caves that have been carved out of a mountainside.

They are "Mysterious" because no one knows why exactly when they were made.

Then transfer directly to Hangzhou Airport, drive for about 4 hours. 

Take the flight directly back to Hongkong.