进行 (jìn xíng) means to carry out, conduct, or proceed with an activity. It is typically followed by a verb phrase describing the action being undertaken (进行讨论, to hold a discussion; 进行调查, to conduct an investigation). Unlike many verbs, 进行 does not take objects directly - it requires a following verbal noun. It appears frequently in formal and written Mandarin to describe organised or ongoing activities.