Beware!! This business will surprise you by asking tip 20%.
The girls from Beijing, China her name Keena was my massage therapist. When I paid with the credit card, I put tip $10 and she told me to tip her 20% which is $20 from $90. It was my first time and it will be my last time. You don't make people to tip 20% since tipping is an act of generosity and it is not appropriate to ask the customer to tip more. Bad experience.