How long does it take to go from Huangshan Summit to North Train station?

Hello, we’re plannign a trip to there next weekend (Jan 5-6) and I was wondering how long it takes to get from the summit to North Train Station? That is, using the cable car to go down and a bus from the mountain to the station. I booked the return tickets around 4pm from North, just want to make sure we will be on time. Many thanks !!