The convex-concave mountain is an important place in Fengyuan. The hiking trail in Fengyuan is between this mountain and Yanfu Town, and there is also a cable car to reach here.

Please go up until the blue circle shows that the crater is facing the boss of Zhanyan Team. Remember to take the meteorite off the machine after the war.

Note: Since it is a ruby, it will not fight against the naval fleet. Only emeralds can fight these two organizations.