A man had to quarantine in his car overnight as his health QR code suddenly changed during travelling in northern China.

Video filmed in the city of Heihe in Heilongjiang Province on January 14 shows an official sticking a paper strip on a man's car door to seal his vehicle after he filled a form.

Later stills show the man sleeping in his car at night.

According to reports, the man's health code suddenly had a star on it when he drove out of Heihe City, which meant that there were medium-high risk areas in the province he visited.

So the official sealed the man's car until he drove to the destination to take a COVID-19 test. It took the man two-and-a-half hours to arrive at his work place, and his car was unsealed for COVID-19 test.

However, since the result did not clear yet and it was late already, the man slept overnight in his car.

Fortunately, his COVID-19 test result was shown to be negative.

The video was provided by local media with permission.

1月14日，黑龙江黑河。一名男子从上海出发到黑河工作了几天后，因为上出现了疫情，在出城时行程码突然出现星号。行程码中城市名称标有*(星号),表示你在过去14天访问过的城市中目前存在中等或高风险区域,但这并不意味着你实际访问过这些中等和高风险区域。
男子在通过出城关口时，被当地防疫人员要求“居车隔离”，要求到达目的地以后，核酸检测为阴性才能自由活动，当即给男子的车窗贴上了封条。
男子驾车2个半小时到达工作场地，揭掉封条并接受核酸检测。男子表示，因为核算结果未出，天色又晚，只能在车里呆了一晚上，最后拿到了核酸检测阴性报告，顺利开始工作。（视频由黑龙江台提供)