China says it will launch 15 measures to bolster the development of its western provinces with the construction of logistical infrastructure such as ports and aviation hubs.

The General Administration of Customs said the measures would enhance the integration of rail, air, river and sea links in China's west, state media reported.

The measures are to include enhancing international aviation hubs in cities including Chengdu, Chongqing, Kunming, Xi'an and Urumqi, while developing comprehensive bonded zones, and integrating these with ports and other transport links.

A number of ports would also be built and expanded.

China has long sought to bolster the economic heft of its western regions, which have markedly lagged coastal provinces.

But ethnic tensions in such places a Xinjiang and hard-line security measures Beijing says are needed to safeguard national unity and border stability have drawn criticism from some Western nations.

China's western regions comprise about two-thirds of the country's land area and include regions such as Sichuan, Chongqing, Yunnan, Xinjiang and Tibet.

China's Politburo in 2024 called for a "new urbanisation" of western China to revitalise rural areas, expand poverty alleviation efforts and strengthen energy resources.

Efforts have also been made to increase linkages to Europe and South Asia through trade corridors including rail freight routes.