List of auxiliary NTHS Expressways

National Trunk Highway System
NTHS expressway marker
NTHS expressway in China
System information
Formed:	13 January 2005
Highway names
NTHS:	GXXX or GXXXX (green)
System links
Expressways NTHS Primary Auxiliary CNH Transport in China

Auxiliary NTHS Expressways and Branch NTHS Expressways of China. Auxiliary expressways are follow by two additional digits of their primary expressway and the GXX0X series routes are city beltways. Generally, odd-numbered routes with lower numbers in the east and higher numbers in the west; even-numbered routes with lower numbers in the north and higher numbers in the south.