C314
It was a secret mission that Nangong Ling had sent for Nangong Feng to assassinate Song Chenyi. Nangong Ling knew that she had already forgotten about Song Chenyi, but he still had feelings for her, so she definitely had to ask Nangong Feng for Song Chenyi's life.
She wanted to persuade Nangong Ling to retract her life, but to no avail. She had steeled her heart to make Song Chen die easily