Teng Bo operates a boutique hotel in Hangzhou for mainland Chinese travellers. A fan of California red wine, he makes sure the wine cellar is stocked with top-quality cabernet sauvignon and pinot noir from Napa and Sonoma.In the 10 years since opening his hotel in the capital of Zhejiang province, 180km from Shanghai, Teng says more Chinese wine drinkers than ever are asking for California wines.“California wine has a richness that really suits Chinese drinkers’ palates,” he said.Teng prefers…