换防

Traditional form:

換防

Pinyin (reading):

huànfáng

Definitions:

• to relieve a garrison
• to change guard complement

Characters:

• 换 - to change; to exchange, to swap, to trade
• 防 - to protect, to defend, to guard against

Traditional characters:

• 換 - to change; to exchange, to swap, to trade
• 防 - to protect, to defend, to guard against