Chinese · Numbers & Time
xīngqī
Week
A period of seven days.
下个星期我去北京。
Next week I am going to Beijing.
'星期' (xīngqī) derives from '星' (xīng), meaning 'star', and '期' (qī), meaning 'period', initially indicating a division of time associated with celestial bodies.
'星期' is used in both spoken and written Chinese to refer to the weekly cycle; it is common in both formal and informal contexts.