〜にいく

Verb + にいく expresses going somewhere specifically for the purpose of doing the action of the verb. It focuses on the purpose or goal of the trip, rather than simply moving from one place to another. The verb before に goes into its ます-stem form, and に行く attaches to that stem to indicate going to do that action. For します verbs, you use しに行く (e.g., 勉強しに行く). The construction is commonly used for planned activities or activities undertaken away from the speaker’s current location.