Tin bent, a crackling sound known as the "tin cry" can be heard from the twinning of the crystals. Tin melts at low temperatures of about , the lowest in group 14. The melting point is further lowered to for 11 nm particles. β-tin (the metallic form, or white tin, BCT structure), which is stable at and above room temperature, is malleable. In contrast, α-tin (nonmetallic form, or gray tin), which is stable below , is brittle. α-tin has a diamond cubic crystal structure, similar to diamond, silicon or germanium. α-tin has no metallic properties at all because its atoms form
San Tin the area. The Man clan decided to settle in the area in the 15th century. They dried the marshes and gradually filled them with soil, turning them into 800 hectare of rice paddies. This is reflected by the name San Tin, which means "new field"s. The San Tin areas are divided into nine villages within the area most notable areas are Wing Ping Tsuen (), which is close to the Tai Fu Tai Mansion, and Fan Tin Tsuen (). The areas around San Tin are covered in wetlands hence their main products are cabbages (like Chinese cabbage or kai-lan) and