I currently just have "viên đá" (which I thought it's the stone, according to the translation) in my inventory and something else "dây cột". And at this point, I don't know what I have to do, I managed to get puzzle no.1 from the statue but the path got blocked so I had to return it.
Oh ok.
The stone that you've collected is one of 4 stones that you have to collect in order to open a big door in the church. And the "dây cột" is actually a "dây cót" - a mainstring that you can use it in the clock that is in the save room. Use it and the clock will stop tickling and a "đầu sư tử" stone will drop.
ah yes, I almost forgot about that part :P. It's one of the more frustrating monster chase level compared to others. But you almost came close to the end of the game xD, I'm very impressed! That part was hard and challenging, but it's doable, you just have to push the crate as fast as you can, there are several ways to push it and eventually, you will find the fastest way xD!