Go to the parking lot to buy tickets, you can take the bus or cableway, and there are tour guides! Free! If you leave, there will be many people following them, about a few hundred meters. Just follow everyone!
In addition, don't draw lots for which temple to go, talk to the old monk or explain. Generally speaking, children are very scary! After that temple, just follow the guide anyway! Free! Almost there. Be careful, it's cold underground. Take your clothes. If you play with them, you will get wet. You can get a raincoat if you have a ticket!