Once the beast flies away, climb down the building and go to the fox. Follow him, jump down the stairs and reach the very bottom. Cross the stone bridge, and go down the stairs and keep up with the fox.
After a while, you will reach the building - enter and run along the successive rooms. Climb up over the stone blocks and, after a while, you will reach a sizeable chamber with a chasm. Go right, run towards the stone and keep climbing up the stairs. Walk outside and you will meet the fox once again.
Keep following the fox and you will eventually reach a white building. Jump onto the stone block, grab onto the golden ledges and climb up. After a while you will reach the very top. The path ahead is blocked by ghosts.
Approach the golden orb and give it a push, which will knock all the ghosts off the bridge and unlock passage. Take a few steps ahead and the flying monster will appear again. Run as fast as you can, up ahead, which will start a cutscene, where the monster drops into the chasm. Now it will leave you alone.
You will get back into the chamber from which you have started this chapter. However, this time around you can finally solve the puzzle. Position the orb so that the symbol on the left is in full light. You can now jump onto the stone block on the right and match your shadow with the shape on the wall.
Follow the uncovered passage up to the tower. After a while you will see a door and a light. Follow it and you will have finished this chapter.