Fated Hearts (一笑随歌) is adapted from the novel Yi Xiao by Chi Yi Qian Yu. During war, female archer (our heroine) from the country Jinxiu successfully shot and wounded their eldest prince (our hero) from the enemy country Susha. However, she disappears shortly after falling off a cliff. The injured prince is also chased in battle and goes missing after the war. He later meets the same female archer in a small village, except she has lost her memories and has a disabled arm. Finding the whole situation suspicious, he takes her with him on a journey to unveil the conspiracy between the two countries.
You can read the ongoing novel translation at Wattpad by sectumesempra.