Bing found the following results
Lanzhou - Wikipedia
Lanzhou | Ancient City & Cultural Hub | Britannica
Lanzhou Travel Guide: Tours, City Map, Tips, Attractions
Lanzhou Travel Guide: Tours, Weather and Travel Tips - China Highlights
Lanzhou Introdution - History and Present Day's Lanzhou - China …
Lanzhou - Wikiwand
China travel - Lonely Planet | Asia
Lanzhou – Travel guide at Wikivoyage
Lanzhou summary | Britannica
Lanzhou - Wikitravel