Y aoji Chaogan, a no-frills canteen next to Beijing’s historic Drum and Bell towers, once proudly displayed photographs of Joe Biden, who visited the restaurant when he was US vice-president in 2011. Biden’s visit went viral in China , with media praising his “noodle diplomacy” (one of the dishes that Biden ordered was zhajiang mian, a traditional style of Beijing noodles with bean paste). But evidence of Biden’s visit was removed when the restaurant was redecorated a few years ago. A visit from a US leader is no longer something to boast about. “If US politicians were really smart, they wouldn’t try to hold China back,” said Liu Cheng, 47, at the restaurant on Wednesday as he tucked into a lunch of steamed baozi and tofu skin salad. Donald Trump arrives in Beijing on Wednesday to a China that has grown in confidence in the nine years since his last state visit, in 2017.…