Table 3. Summary of FGI with the experts

Fields	Subjects	Date	Interview method	Interview time
Total	2 persons of public officials	June 7, 2020 ~ June 17 (1st: elements for classification)June 19, 2020 ~June 30 (2nd: type classification)	- Visiting- Written interview- Telephone interview	Visiting: 2 hoursWritten interview:- Collected 10 days after sending an emailTelephone interview:- Further questions
Planning and designing	6 persons of professors3 persons of researchers1 person of planner
Construction	2 persons of gardner