For many Westerners, ice in a drink is the default. In China, the opposite is often true. The cultural significance of 冰块 (bīngkuài) lies more in its absence than its presence. Traditionally, Chinese culture, influenced by Traditional Chinese Medicine (TCM), advises against consuming very cold or icy food and drinks. The belief is that cold items disrupt the body's internal balance (qi, 气) and are particularly bad for digestion and the spleen. It's common to see