Need. Yantai Library's self-service lending and returning system only recognizes the second-generation ID card, so readers and friends need to register with their ID cards first, and then go to the library to borrow and return books themselves. Yantai, a prefecture-level city under the jurisdiction of Shandong Province, is one of the central cities of Shandong Peninsula, an important port city around Bohai Sea and a national historical and cultural city.