The expansion plans to connect every county in China by national trunk highway, and every city with a population over 200,000 by expressway.
[1][2] A similar planning is active for connecting all provincial capitals and cities over 500,000 inhabitants by high speed railway.
[3] In October 2020 the Chinese Ministry of Transport reported that 98.6% of cities over 200,000 population had been connected by expressways.
[4] By December 2020, Zhejiang and Shaanxi reported that all their county-level divisions were connected by expressway.
Another extension plan was announced in 2022, including new small purpose connection highways (601-701).