Why Malaysian Amoi has smaller tetek compared to Amoi from HK, Taiwan and even China? It's due to nutrition and the food Chinese eat here. Our food here tends to be spicier and it is actually not that good for Chinese genetics. Genetically Amoi have smaller tetek but due to better food and health, Amoi in HK, Taiwan and China has bigger tetek nowadays. They drink a lot of nutritional soups since young compared to Malaysian Amoi because they can afford it.