yes，there are many guide tirps to Jiuzhaigou, usually, it takes 10 hours to jiuzhaigou by bus, but if you go there by plane, it only takes 1 hour, so you can choose the way you want, if you go there with travel agency, they will arange 4 days for you. if it's possible, i suggest you go there by yourself, it will be more intereting and free.