On 30 December he sent a message to fellow doctors in a chat group warning them to wear protective clothing to avoid infection.
Four days later he was summoned to the Public Security Bureau where he was told to sign a letter. In the letter he was accused of "making false comments" that had "severely disturbed the social order".
He was one of eight people who police said were being investigated for "spreading rumours" Local authorities later apologised to Dr Li.
In his Weibo post he describes how on 10 January he started coughing, the next day he had a fever and two days later he was in hospital. He was diagnosed with the coronavirus on 30 January.