1. Tianxi is an anthropomorphic term, a term of endearment between lovers or close relationships, describing sweetness. It also means darling, sweetheart. When I think of the other person, my heart feels beautiful, happy and so on.
2. Sweet Sweetness comes from "Three Lives, Three Worlds, Ten Miles of Peach Blossom". After Bai Qian faced A Li's angry and pitiful words, he said a sweet and boring words, "You are my heart." My sweet sweetheart, it can be said to be the best love words.