A fire broke out at a research lab belonging to the tech giant Huawei Technologies in the southern Chinese city of Dongguan.
The flames went straight to the sky with black smoke. The details and cause of the accident remain to be investigated, and a rescue operations is underway.
Videos posted on social media show giant plumes of dark grey smoke rising from the building.
According to the Songshan Lake Fire Brigade, after receiving an alarm at about 2:00 p.m. (local time), it quickly dispatched firefighters to the site.
There have been no casualties.