How much ideological power can emerge from dark, narrow loess caves? As 2026 marks the 90th anniversary of the Long March victory, CGTN's Yang Xinmeng visits the Yangjialing Revolutionary Site in Yan'an with international military officers.

Exploring cave dwellings that once served as working spaces during a critical period in modern Chinese history, they explore how major decisions were made in extremely limited conditions. Small spaces. Large historical consequences.