Bus number 53. According to Baidu map query, start from Weihai Kowloon City, get on the bus at Jiajiayue Kowloon City Station, take bus No.53, start from Huaneng Power Plant Hub Station, get off at the district government station, and walk about 720 meters to the municipal hospital. The whole journey is about 1 1.7 km, which takes about 54 minutes.
You can also take a taxi from Weihai Kowloon City to the municipal hospital, about 24 minutes, about 30 yuan.