New house at home, cabinet made of paint-free board! It's very cold today. After opening the window, the cupboard rang by itself! What's going on here? Will it be bad?

Thermal expansion and cold contraction are the characteristics of wood materials. When you open the window, it will change the humidity and temperature of the air, so there will be some changes in the wooden cabinet. This change is the process of thermal expansion and cold contraction, during which there will be some subtle noise, which should be normal and will not damage the cabinet.