Is it possible to buy a chipcard for buses somewhere in Kunming, instead of buying separate tickets?

Sure! You can bus a transportation smart card at the following ten spots: Xiaoximen Customer Service Center, Beishiqu Parking Lot, Juhuacun Parking Lot, main railway station parking lot, Huangtupo Parking Lot, Mianshan Parking Lot, Xinluoshiwan Parking Lot, Yuhua Parking Lot, Dongfeng Square station of metro line 2, and South Bus station of metro line 1.