Tsetan, the Tibetan driver, supported the author throughout the journey by driving skillfully over snow-covered mountain passes, choosing safer tracks, and patiently handling breakdowns and bad weather. He also cared for the author’s health in the thin air, suggested stops for rest and acclimatization, and ensured they reached Darchen as safely and comfortably as possible.
\[ \text{Tsetan’s Support} = \text{Skilful driving} + \text{Route judgment} + \text{Care for health} + \text{Practical help} \] \[ \text{High passes and snow} \Rightarrow \text{Need for an experienced local driver (Tsetan)} \] \[ \text{Author’s safety and progress} \propto \text{Guidance and decisions made by Tsetan} \]
Thus, without Tsetan’s guidance, care, and practical assistance, the author’s difficult journey towards Mount Kailash would have been far more risky and uncertain.