Is it illegal to lock the kitchen and office in Hangzhou Four Seasons Hotel at night?

Hangzhou All Seasons Hotel locks the kitchen and office at night. The kitchen and office of the hotel at night belong to the places where important materials and articles are stored, and some of them need to be locked, but the hotel cannot lock the fire control measures. According to Article 28 of the Fire Protection Law, no unit or individual may damage, misappropriate or dismantle or stop fire control facilities and equipment without authorization, bury, occupy or block fire hydrants or occupy fire prevention spaces, occupy, block or close evacuation passages, fire exits and fire truck passages. Doors and windows in crowded places shall not be equipped with obstacles that affect escape and fire fighting and rescue.