Is Dalian adjacent to Russia?

Not adjacent. According to the information of Baidu map, Dalian is located on the east coast of Eurasia, at the southernmost tip of Liaodong Peninsula in the northeast, separated from Russia by Jilin Province and Heilongjiang Province, and not adjacent. Located at the southernmost tip of Liaodong Peninsula, Dalian has a natural ice-free port with four distinct seasons and is rich in apples and Liaodong Stichopus japonicus.