@Yong-Quan0 You have far too many pictures of the resort. You need to take good pictures of your property and what it offers. You are also super cheap for the number of persons that you are advertising for, which might make it appear that the house is too "bare" for guests to feel comfortable.
Do you have a pool? Is there adequate parking for the number of cars that 16+ guests would be driving? Is the kitchen supplied with enough dishes and cutlery to feed a group of 16+ for several meals without washing dishes in between?
I just don't see enough of what your property has....