The roofs had skylights to let in some sunshine, but still shopkeepers had to burn candles during business hours. In 1934, during the period of the Japanese occupation, Lukang's streets were widened and the coverings removed.
為了防止風沙及土匪入侵，鹿港人在主要的商業街道上蓋以屋頂，行人仰頭不見天日，因而稱為「不見天街」。