In which episode did Gu Jian die?

In the East Palace, Gu Jian died in episode 48.

According to Youku, in the East Palace, Gu Jian liked Xiaofeng, and in order to take Xiaofeng out of the palace, he ventured into the palace, but died in front of Xiaofeng. Xifeng (Peng) from nine princess, Xizhou went to Beijing with her father to meet Emperor Yangdi, and she met Emperor Yangdi (Chen Xingxu) by chance. Two children mistakenly involved in other people's crises and became friends in need. Years later, Li Chengyin got close to Xiaofeng because of her marriage. Although they were strangers, they were still attracted by each other's kindness and justice and fell in love. The good times didn't last long. The people in Li Chengyin exterminated Xiaofeng's matriarchal tribe, and Xiaofeng couldn't stand it. She jumped out of the legendary forgetfulness and planned to forget her feelings. Li Chengyin, who likes to regret, jumped with her. When they met again, they had forgotten each other and everything related to each other and started a nominal marriage. But the struggle brought them together again, and they fell in love again. After a big robbery, Xiaofeng recalled that she was caught in a dilemma of love and hate, and Li Chengyin was also hated by her. Finally, Xiaofeng put down her hatred and hoped that Li Chengyin would make the world peaceful.