Core first

Most routes should become legible through Guangdong, Hong Kong, Macau, and Guangxi before adding deeper southern provinces.

Every city needs a role

Do not add a city unless it changes the route purpose: meetings, food depth, harbour polish, scenery, or family pacing.

Expansion needs days

Hunan, Fujian, Guizhou, Jiangxi, and Yunnan should not be squeezed into a short core itinerary.

Business routes are custom by default

Supplier geography, fair timing, hotel districts, and interpreter needs usually matter more than headline attractions.