New facility, new rules

A local regulation took effect on Sunday to further secure the safe operation of China's FAST, the world's largest single-aperture telescope, in Qiannan Buyi and Miao autonomous prefecture, Guizhou province.

The new regulation, the first of its kind in Qiannan, came out on the same day the big telescope was officially put into service.

It prohibits unrelated construction within 5 kilometers of the telescope - designated as the "core zone". Improper existing buildings will be torn down.