Question 2: Good-looking.

Question 3: hit along the auricle (it is best to hit the ear continuously and hit several times. According to my personal preference, I suggest 2-5 on one side and one or one less on the other side. It's not bad to hit the ear bone. You can also play eardrums, but it's very troublesome.

Question 4: Pain on the ear bone, no pain on the auricle, and pain on the umbilicus.