He walks the routes first, then decides which hour you should too.

Leo has walked most of western China before he ever walked it with guests — the kora around Mount Kailash, the Minya Konka traverse, the high passes above Deqin. Every route he sells, he has walked twice: once to learn it, once to learn when it should be walked.
His treks are engineered like the rest of the house builds journeys — named camps, a support crew that moves ahead, hot meals at altitude, and a pace set for the slowest walker, not the fastest. Guests who feared they were not trekkers finish wondering what the fuss was about.
"Mountains do not care about your schedule, and that is the lesson. We start at the right hour, stop at the right ledge, and let the mountain set the clock — people call that hardship. It is actually the best hospitality there is."
A named tailor replies within 12 hours. Your first proposal within 24.