Oysters wreak havoc on Denmark's seashore. Photo from Danish Embassy's Sina Weibo account.

The Danish Embassy published a story on Monday evening on its official Sina Weibo account, China's twitter-like social network, about the problems for their country caused by an invasion of the exotic oysters. Chinese internet users enthusiastically responded with much discussion about ways to address the issue on Weibo, then WeChat, another popular social media network.

The embassy makes a small joke in the post to invite Chinese people to eat oysters in Denmark which triggered heated debate. Apparently, when it comes to eating, Chinese people are very serious and they already started to make plans for their oyster journey.

The most popular comment came from someone suggesting oyster visas should be issued "with 10 years' unlimited round trips and one-month-long stay and I can eat up them all in five years" received over 10,000 likes. There are people even recommending visa-free and oyster immigration policies in China.

Chinese internet users make comments below the Danish Embassy's post to address the oyster issue. Screeshot of the Danish Embassy's Sina Weibo

The oysters, known as Pacific oysters, are a new species in Denmark and have caused huge damage to the seashore's ecological environment. Their proliferation is unstoppable since they have no natural enemies there. People have to get across them in shoes before swimming. What's worse, their occupation leads to the endangerment of the Limfjord, a Danish local oyster.

Scientists and fishermen made numerous complaints to the nation's conservation authority but the thorny issue remains unsolved. They also encouraged local people to bring them to their dining tables and few were motivated.

The Danish Embassy is very grateful for Chinese people's innovative advice such as building oyster sauce factories and organizing oyster-dining journeys. It also said as long as China permits, they'd love to export oysters to China.