What is this weird pattern of streets in China? (Google Maps)

[gaffa]

They ordered a set of Nazca Lines in kit form but lost the instruction sheet.

[Fubaya]

@Crown_Prince_of_Irony

Imagery from April 15th 2005 shows them in the middle of construction - oddly enough, it looks like they’ve either laid down chalk or possibly concrete, and that it has lasted pretty much intact for 4 years in a presumably harsh environment - very odd.

The Google Earth lines from the OP have actually been floating around since
2006.