天气冷,湿度高 you have already answered your own question. It is a common phenomenon. 4 x' i* t* N+ B/ RAsk your builder, they will tell you what exactly run above and make that sound.
9 R4 @; |5 K- O# qWe have 类似水滴的声音 from the beginning and been this house for 3 years. : b. D* l& D# }7 v9 _; l e
Nobody tells us what exactly that is. A city guy can't tell us anything about that./ V' [2 J$ b4 B
8 d5 {% \( ^6 m+ k$ U" E! m" G6 _The house is good so far, so we just leave it alone.