240h route assumptions
- Example origin airports: SFO, LHR, YYZ, SYD
- Mainland entry / exit: PEK → PVG
- First stop after mainland China: ICN
- Planned stay areas: Beijing, Shaanxi, Shanghai
Why this route shape works: Different entry/exit ports: fly into Beijing, leave mainland China from Shanghai to a third country/region.
Watchpoint: Do not book PVG back to your origin country. Your onward leg after Shanghai must be a different country/region such as ICN, NRT, HKG, or SIN.