Windows are the "eyes" of a house. They frame the scenery of all four seasons, block external noise, and subtly influence the temperature and humidity indoors. For most people, selecting windows during renovations often falls into the trap of "focusing on appearance and comparing prices," while overlooking their core value as the "invisible guardians" of the home. In fact, the standards for a good window go far beyond just looking nice—from materials to performance, from scenarios to long-term durability, every detail holds great knowledge.