The unexpected death of a giant panda on loan to a zoo in Thailand has sparked outrage in China and calls for no more of the animals to be lent to the country. Chuang Chuang, a 19-year-old male, reportedly collapsed on Monday afternoon after eating bamboo in Chiang Mai Zoo in northern Thailand, according to local media. While the death will be investigated on Thursday by experts from the China Conservation and Research Centre for the Giant Panda, the news has not placated Chinese social media. Chuang Chuang’s demise caused a stir in his native China, where a hashtag about the death drew 250 million views on social media platform Sina Weibo. If you can’t take care of our national treasures, don’t borrow them A Chinese social media user Many in the online community say they still have questions about Chuang Chuang’s death and the quality of food and facilities at the Chiang Mai zoo. One user wrote: “Please don’t rent any more pandas to Thailand! No! Chuang Chuang is probably the most bitter panda in the world! What kind of bamboo he was given to eat? If you can’t afford [a panda], don’t rent it.” “You must take good care of our national treasures loaned to you, Thailand,” another user wrote. “Now Chuang Chuang is gone. It’s no use saying anything. If you can’t take care of our national treasures, don’t borrow them. I’m so sad.” Many questioned China’s programme of loaning its endangered giant pandas abroad, part of its “panda diplomacy” in which zoos outside of China pay millions to host the animals. Chuang Chuang had been on loan to the Chiang Mai zoo since 2003, along with his mate, Lin Hui. Photos on Wednesday showed Thai mourners and zoo staff laying flowers near the empty enclosure of Chuang Chuang at the Chiang Mai Zoo. As Germany debates panda names, here’s how cubs get named “We loved and nurtured him so much. I hope everyone will miss him like we do,” said zookeeper Kannikar Chantarangsi on Tuesday. The cause of death has not been released. Pandas generally live 14-20 years in the wild but can live up to 20 years in captivity, according to the WWF animal welfare organisation. A statement from China’s consulate in Chiang Mai from Monday said experts from the China Conservation and Research Centre for the Giant Panda had been dispatched. Chuang Chuang and his partner Lin Hui – now Thailand’s only remaining panda – were celebrities in Thailand after Lin Hui gave birth in 2009. Baby pandas are rarely born in captivity and the animal was eventually returned to China. Lin Hui conceived through artificial insemination after Chuang Chuang failed to impregnate her, despite being shown videos dubbed “panda porn” meant to encourage them to mate. Pandas are famously difficult to breed in captivity. The pair have been on loan to Thailand since 2003. They were “married” in November 2005 at a traditional Chinese wedding ceremony overseen by a Chinese diplomat to mark the zoo’s 28th birthday.