Early in the Warring States period, Wei was the first to carry out reforms, and for a time it became the strongest state.
Tips
mistakes
卫国 is a different, older Zhou state with the same sound, and 卫国 is also the verb 'to defend the country'. The chengyu 围魏救赵 'besiege Wei to rescue Zhao' is about the Warring States Wei.
history
The Three Kingdoms Wei began in 220, when 曹丕, son of 曹操, made the last Han emperor give up the throne; it is often called 曹魏.