A glass walkway in Sanya, south China's Hainan province. (Photo/Xinhua)

In recent years, glass walkways have become a popular addition to various tourist attractions across China. However, some tourist spots have had to close their walkways due to safety concerns.

Since March 2018, all 32 glass walkways in 25 scenic spots in Hebei province of northern China have been suspended, including the so-called "world's longest glass suspension bridge" in Hongyagu Scenic Area in Pingshan county.

In addition to Hebei, other provinces such as Heilongjiang, Hubei, Hunan and Jiangxi have ordered scenic spots to shut down sub-standard glass walkways.

Many accidents relating to these walkways occurred due to lax management. One of the most recent incidents took place in August 2019, when the glass walkway at the Site of China Sea Level Datum in the coastal city of Qingdao unexpectedly cracked, and two children almost fell into the sea.

There has been a lack of regulation in regards to construction standards and management of the glass walkway projects, sources from the scenic industry revealed.