Going to Huanglong Cave is a big cave with complicated light. How to set the camera to take good photos (for T50 card machine)?

If taking a portrait: exposure mode: portrait at night (this mode is to illuminate the human body with a flash and increase the background exposure with a slow shutter speed), exposure compensation: 0EV (mainly depends on whether the exposure of the subject is enough, if the portrait is underexposed, the exposure can be appropriately increased, such as ++ 1EV). White balance: automatic ISO: choose 200, and the maximum value should not exceed 400, otherwise the photos will be noisy. If you only shoot the scenery in the cave: support the camera in a very stable place (preferably with a tripod) and try to keep the camera stable when shooting. On this premise: exposure mode: program automatic, or night scene mode, the flash is set to forced non-flash exposure compensation: 0EV (depending on the light distribution, it is sometimes necessary to shoot night scene atmosphere, which requires-1EV) WB: automatic ISO: 6550.