Beginners: It is recommended to hire qualified coaches.
Intermediate or advanced: If you need training help, you can also ask.
Advantages of private education: ensuring safety, encouraging training and efficient system.
Excellent personal education: excellent professional knowledge and friendly service attitude (you can observe from the coach when guiding other members), good personal qualities (such as manners and personal hygiene), and extensive hobbies (so that you can know sports or other knowledge in time).
I hope you find a satisfactory personal education.