Take bus from Shilin to Qujing directly, or to Luliang first then change to another one to the destination. The whole journey on road is about two hours. From Qujing to Guiyang, you can choose train or bus. It needs at least 8.5 hours to cover the journey by train. Suggest you take train, for buses are very few and not comfortable as train. The train ticket is about 60RMB.