The string is not a print, but a real string, which you can pull to open the blinds, as shown on the image above.

中间这根线可不是印上去的，它是实实在在的一根线。

youdao

Exits should be unblocked(from the inside), unobstructed and well marked. The exit door should push to open, not pull to open.

紧急出口需保持畅通， 不得有任何阻挡/阻塞， 且明显标示。紧急出口门必须是推开， 而不是拉开。

youdao

Exits should be unblocked(from the inside), unobstructed and well marked. The exit door should push to open, not pull to open.

紧急出口需保持畅通， 不得有任何阻挡/阻塞， 且明显标示。紧急出口门必须是推开， 而不是拉开。

youdao