 Complete the following phrase:  In 1269, Trần Quốc Khang was appointed as commander in chief thượng tướng quân to govern the southern frontier province Nghệ An. Prince Tĩnh Quốc decided to build his palace there, which was so luxurious that the Emperor knew about its reputation. Ultimately Prince Tĩnh Quốc transformed his palace into a Buddhist pagoda which still remains today with the name Thông Pagoda. During the 