A Day Without Policemen 1993 on netflix

Chan Wai (Simon Yam) is a former inner-city policeman recovering from a traumatic experience involving an AK-47. After the incident, he was assigned to a rural island as police chief of a small village. He passes his uneventful days there drinking beer, smoking hash and daydreaming… but when a group of heavily armed thugs invade his district, he must face his trauma head-on and fight back.