By Yuichi YAMAZAKI / AFP In Tokyo’s Asakusa tourist district, caricaturist Masashi Higashitani is dusting off his Chinese as he prepares for an influx of travellers after Beijing ends inbound quarantine rules. In Tokyo’s Asakusa tourist district, caricaturist Masashi Higashitani is dusting off his Chinese as he prepares for an influx of travellers after Beijing ends inbound quarantine rules. “We used to say ‘ni hao’ all the time,” he said with a laugh as he whipped up a portrait in minutes. Nearly 9.6 million Chinese visited Japan in 2019, the biggest group of foreign tourists by far and a mas…