Japanese tourism and retail stocks fell on Monday after China warned its citizens not to travel to the country as Tokyo and Beijing remain locked in a row over Taiwan.

Japan is set to send a senior diplomat to China in a bid to soothe tensions, public broadcaster NHK reported Monday, after China ratcheted up its response to Japanese Prime Minister Sanae Takaichi’s comments over Taiwan.

By Rocky Swift TOKYO (Reuters) -Japanese tourism-related shares plunged on Monday after China warned its citizens against travel to its North Asian neighbour following a widening diplomatic rift over Taiwan.

A fresh wave of tension has hit the seas between China and Japan after China sent its coast guard ships through the waters around the Senkaku islands. Rising Tension in Disputed Waters These islands are controlled by Japan,

Both countries have summoned each other’s ambassadors after Prime Minister Sanae Takaichi said a Chinese attack on Taiwan could draw a military response from Tokyo.

A Chinese diplomat’s call to cut off the prime minister’s “filthy head” signaled a revival of a combative style Beijing had tried to dial back.

An offhand remark from the prime minister of Japan has roiled Beijing, unleashing an onslaught of accusations and even threats of decapitation from Chinese officials. The Chinese Communist Party is demanding that Prime Minister Sanae Takaichi retract an assertion she made last week,

Heavyweights clash as election of hawkish PM Sanae Takaichi and US policy unpredictability change calculus in region