The number of Chinese visitors to Japan plummeted by 45 per cent last month from a year earlier, to around 330,000. BEIJING: China warned its citizens on Monday (Jan 26) against travelling to Japan during the upcoming Chinese New Year holiday, citing deteriorating public security, with Tokyo and Beijing locked in a diplomatic spat . Japanese Prime Minister Sanae Takaichi's suggestion in November that Tokyo could intervene militarily in any attack on Taiwan triggered a sharp backlash from China .