Notes from Wikipedia:
[...] Kwun Tong Resettlement Estate (Chinese: 觀塘徙置屋邨), commonly known as Kai Liu (Chinese: 雞寮) and built in 1960s. It was the first resettlement estate in Kwun Tong District. The residents were mainly Chaozhou people. There was no kitchen or washroom inside the flat. The roof was commonly used as school classrooms and community activities area. In 1973, to avoid the confusion with another estate, Kwun Tong Estate, Kwun Tong Resettlement Estate was renamed as Kwun Tong (Tsui Ping Road) Estate (Chinese: 觀塘(翠屏道)邨).