Any direct bus from Baoguosi (emeishan) to Huanglongxi ancient town?

I am sorry to tell you that no direct bus operates between. You have to go back to Chengdu for a transfer. You can take bus no. 1 or 5A from Baoguosi to Emeishan Railway Station (CNY1). Then take a high speed train to CDEast in 1.5h at a cost of CNY65 for a second class set and CNY78 for a first class seat. Then take subway line 2 to Chadianzi Bus Station and take a direct bus to Huanglongxi with the fare of CNY15/16, and the last bus leaves at 18:10 by the way!