Can we book a group trip for half a day at Beng Ling Temple? For Liujiaba, there are small boats and 6 people. Have there been any special caves that can be visited recently? Do we need to reserve an interpreter in advance as well? (Note: Please note that "Beng Ling" here likely refers to "Bengaoling Temple", which is a famous tourist site in China.)

No half-day team, Lanzhou city center to take a fast boat for 1 hour and 30 minutes, take the boat for 1 hour, disembark for 1.5 hours to visit. Special cave available but can’t make it
Speedboats also need to wait for all the personnel to be on board before setting off, just buy tickets at the scene and it will be okay. They have a commentary guide.

(Note: I kept the original sentence structure and format as requested.)
There is no half-day tour, and there is nothing to see in the special cave.
Have a look at special views, but only see those special views. Half-day timing might not be enough, fast boat gives you 2-11⁄2 hours to get on and off shore
No half-day group, Lanzhou city area arrives at fast boat getting on board spot in 1.5 hours, gets on in 1 hour, and disembarks after 1.5 hours for visitation. Special cave exists but cannot make it
Speedboats also need to wait for staff on hand before departure, just go to the scene to buy tickets, and speedboats have interpreters on board.
No half-day team, no looking up rock chambers
Have a special look, but it’s all about the special lookout. Half a day will not be enough to see it thoroughly, and only 2-11⁄2 hours are allowed on shore per speedboat ride.