Chinese airlines have recorded about 491,000 cancellations of tickets to Japan since Saturday – roughly 32 per cent of their total bookings to the typically popular destination – after Beijing advised citizens to avoid travelling there amid a diplomatic spat, according to a veteran aviation analyst.The percentage of flights affected skyrocketed to 82.14 per cent on Sunday and 75.6 per cent on Monday, according to independent analyst Li Hanming, citing his research data covering all mainland...