Fan Xian opened the chest in the third volume of the novel Joy of Life, chapter 36 of Cang Shanxue,"The Secret of the Chest (1)."

Fan Xian's chest contained a bow and a letter. The crossbow was well-made and had great lethality. It could kill enemies from a kilometer away and shoot through walls. This bow was made to change the rules. The words on the stone tablet Ye Qingmei had set up in front of the Overwatch Council were not just words. The words on the letter were the instructions for the crossbow.
The box Fan Xian opened contained a Barrett M82A1 heavy sniper rifle. This sniper rifle was left behind by Ye Qingmei to deal with the Qing Emperor. It had a very strong killing power. This sniper rifle had once been used by Ye Qingmei to kill the Qing Emperor's two older brothers, helping Fan Xian achieve his goal.
Fan Xian opened the box in Joy of Life episode 28.
Fan Xian's chest contained a sniper rifle. This sniper rifle was one of the best sniper rifles in the world. It could shoot through a thick wall. Possessing this sniper rifle meant that he had the ability to kill anyone without worrying about being discovered. In the battle for the throne in the Qing Kingdom, Ye Qingmei had used this sniper rifle to kill two princes who were on guard against assassination. Fan Xian later used this sniper rifle to defeat Yan Xiaoyi.
Inside Fan Xian's chest was a sniper rifle, or more specifically, a Barrett sniper rifle. This sniper rifle was something Fan Xian's mother, Ye Qingmei, had left him before she died. Ye Qingmei was a transmigrator and possessed modern knowledge and items. This sniper rifle was very advanced and rare in that era, and it had extremely high lethality.
Inside Fan Xian's chest was a sniper rifle, or more specifically, a Barrett sniper rifle. This sniper rifle was something Fan Xian's mother, Ye Qingmei, had left him before she died. Ye Qingmei was a transmigrator and possessed modern knowledge and items. This sniper rifle was very advanced and rare in that era. It had extremely high lethality and range. Ye Qingmei might have left this spear behind to protect Fan Xian, allowing him to protect himself or counterattack the enemy at a critical moment. In addition to the sniper rifle, there were two letters in the box. One was for Wu Zhu, explaining why she had left and what she had entrusted to Wu Zhu. The other was for Fan Xian, expressing her love and hopes for him.
Fan Xian's chest contained a Barrett sniper rifle. This sniper rifle was something Fan Xian's mother, Ye Qingmei, had left him before she died. In addition to the sniper rifle, there were two letters in the box. One was for Wu Zhu, explaining why she had left and what she had entrusted to Wu Zhu. The other was for Fan Xian, expressing her love and hopes for him. Fan Xian's mother, Ye Qingmei, was a transmigrator who possessed modern knowledge and items. This sniper rifle was very advanced and rare in that era. It had extremely high lethality and range. Ye Qingmei might have left this spear behind to protect Fan Xian, allowing him to protect himself or counterattack the enemy at a critical moment.
Inside Fan Xian's chest was a sniper rifle, or more specifically, a Barrett sniper rifle. This sniper rifle was something Fan Xian's mother, Ye Qingmei, had left him before she died. Ye Qingmei was a transmigrator and possessed modern knowledge and items. This sniper rifle was very advanced and rare in that era, and it had extremely high lethality.
Inside Fan Xian's chest was a sniper rifle. The specific model was an M82A1. Ye Qingmei had left this sniper rifle for Fan Xian. Ye Qingmei was a transmigrator. When she escaped from the Temple, she had brought this sniper rifle and an intelligent robot named Wu Zhu. This sniper rifle had high lethality and could shoot through a thick wall. Fan Xian's mother had also left a letter in the box, recounting Ye Qingmei's life experiences. Fan Xian's chest contained a sniper rifle and a letter.