Shares in Meituan, China’s largest food delivery platform, have tumbled after its chief executive posted – and then deleted – an ancient poem in a move widely seen as possible criticism of the Chinese government.
Authorities are investigating the company over allegations of anti-monopolistic behaviour, part of a wider crackdown on technology companies.
Meituan’s stock price lost 5.3% on Tuesday and plunged as much as 9.8% on Monday after its chief executive Wang Xing posted the classical Tang dynasty poem, which criticised Emperor Qin Shi Huang for silencing his critics by burning books.
Mr Wang’s post was seen as a veiled comparison of the ruthless ancient emperor and China’s current authoritarian government.
Investors worried over how Chinese authorities might react have been selling their holdings of Meituan’s stock.
Mr Wang posted the classical poem The Book Burning Pit by Tang dynasty poet Zhang Jie to the social media platform Fanfou, according to Chinese media reports.
He later deleted the post, saying it was meant to refer to fierce competition in the e-commerce industry, where the most dangerous competitors are often unexpected.
The Qin emperor is revered as the founder of a modern, unified China but considered a brutal and ruthless ruler who killed scholars who dared to defy him.
Under President Xi Jinping, China has imposed ever tighter controls in an already repressive political landscape and on the Chinese media.
The ruling Communist Party has scant tolerance for public dissent.
The internet sector has come under intense scrutiny in recent months as Beijing expressed concern over the growing influence of companies such as e-commerce giant Alibaba and others.
Regulators ordered Alibaba to pay a record 2.8 billion dollar (£2 billion) fine for abusing its market position and quashed plans for a massive initial public offering by its affiliate Ant Group.
Other technology companies including gaming giant Tencent and search engine giant Baidu were fined for failing to disclose investments and acquisitions.
Regulators have also summoned companies to warn them against anti-competitive behaviour.
Alibaba troubles surfaced after its founder Jack Ma publicly accused financial regulators of being behind the times at a conference in November.
Its stock price has fallen nearly 17% since regulators announced in late December that they were investigating the company.