Neighbour behaviour

Some days we feel a scent of essence when we have breakfast. I think I've written something about this before (but I can't se my own blog in China so I can't check if I posted something about this before, I know for sure I didn't take a photo last time at least). The first time I wondered how come. But when I left to work I understood - our neighbour is praying and offering essence. With the door open... He has this alter in the hallway where he's kneeling and singing/humming.