East China's Zhejiang province launched a special QR code system in June to guarantee the evacuation of residents in high-risk areas, help emergency rescue teams reach their destinations smoothly, and facilitate disaster relief and related work.

"We have the information of all the residents that need to be relocated in the system. Once the flood prevention emergency response is activated, we can easily locate them," said an official of Taoyuanxi village, Taiyang township, Lin'an district, Hangzhou, capital of Zhejiang province.

During the promotion of the QR code system, Lin'an district made evacuation lists for nine types of emergencies, which covered the residents possibly affected by flash floods, living in old and dilapidated houses, as well as waterlogged urban areas. Underground parking facilities were also a key focus of the lists.

Thanks to the system, the district relocated 3,565 residents on July 6 alone.