Anyone who wants to visit “Moon Hut” has to bow down to come in. Whoever you are, there is no “entrance” if you refuse to lower your head, or the “entrance” is around. In this huge area of Hakka ancestral hall, “Moon Hut” silently reminds all visitors, as if telling ‘hold your head down, be modest in heart, and keep humble.’ This is the sorrow of our shared “nostalgia” in this age.