I'm Ji Hei Kang. It would be better to let you know my survey questions. 
1. What functions do you use frequently? Please choose up to three activities. 
2. What functions do you like? Please choose up to three activities.
3. When you use the Pinterest functions below, how much do you consider these criteria?  Please enter the numbers in each box. (6=Extremely concerned~0= Not at all concerned)