天气冷,湿度高 you have already answered your own question. It is a common phenomenon., m3 e- Y+ v$ D( H9 F2 P
Ask your builder, they will tell you what exactly run above and make that sound.
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We have 类似水滴的声音 from the beginning and been this house for 3 years. * c; O3 K' ?5 X& yNobody tells us what exactly that is. A city guy can't tell us anything about that. ; Q# S7 u/ f8 f# T! M7 u" l) B0 B/ M" G
The house is good so far, so we just leave it alone.