The word **参战** (cān zhàn) is a compound verb formed through the common Chinese morphological process of **combination**, where two meaningful characters (morphemes) are joined to create a new, specific meaning. The first character, **参** (cān), carries the core meaning of "to join," "to participate," or "to take part in." The second character, **战** (zhàn), means "war," "battle," or "to fight." When combined, the logical relationship is sequential and purposive: the action of *joining/participating* is directed specifically toward the event of *war/battle*, thus forming the verb "to enter a war," "to go to war," or "to take part in a battle." This structure exemplifies a **verb-object (VO) semantic relationship** within a single word, where 参 is the action and 战 is the object of that action.