为啥 和 为什么 和 为何 和有什么不一样？ | HiNative 1 '为啥' (wèi shá): '为啥' is a colloquial and informal way to ask "why" in Chinese It is commonly used in spoken language and informal writing, such as text messages or social media This term is more commonly used in northern China and may not be as widely understood in other regions Example: 你为啥不来参加聚会？
为何 和 为啥 和有什么不一样？ | HiNative 为何@h_llo 为何 is old-fashioned or very formal 为啥 is colloquial The neutral term is 为什么, which we use in both speaking and writing 的同义词为何 (wèi hé), 为啥 (wèi shà)