In " Celebrating Years," Fan Xian successfully stole the key and put it back in the Palace. Although he had been shot by Yan Xiaoyi during his escape, Fan Xian had cleverly broken the arrow and was not injured. Thus, Fan Xian had succeeded in both stealing and putting the key back. Therefore, Qing Yunian succeeded in stealing the key.
In the years of celebration, Fan Xian successfully stole the key and put it back in the Palace. Although he had been shot by Yan Xiaoyi during his escape, Fan Xian had cleverly broken the arrow and was not injured. Thus, Fan Xian had succeeded in both stealing and putting the key back. Therefore, Qing Yu Nian's key stealing mission was a success.
Fan Xian had successfully stolen the key in the 27th episode of " Celebrating Years." He used the incense to knock out the Empress Dowager and the palace maids on night duty, then successfully stole the key. Although he had been shot by Yan Xiaoyi during his escape, Fan Xian had cleverly broken the arrow and was not injured. Thus, Fan Xian had succeeded in both stealing and putting the key back.
Fan Xian had successfully stolen the key in the 27th episode of " Celebrating Years." He used the incense to knock out the Empress Dowager and the palace maids on night duty, then successfully stole the key. Although he had been shot by Yan Xiaoyi during his escape, Fan Xian had cleverly broken the arrow and was not injured. Thus, Fan Xian had successfully stolen the key in the 27th episode of Qing Yu Nian.
The theft of the key to the palace was in episode 28.
In " Celebrating Years," Fan Xian made a fake key and put it back in its original place to avoid arousing the empress dowager's suspicion. The specific time of return was not mentioned. Therefore, based on the information provided, it was impossible to determine whether the fake key had been put back in Qingyu Nian.
Fan Xian did not return the fake key. Instead, he made a fake key and put it back in its original place to avoid arousing the Empress Dowager's suspicion. Thus, Fan Xian did not send the fake key back.
Qing Yu opened Ye Qingmei's box with the key.
Qing Yu Nian's key opened Ye Qingmei's box. The box contained things that could threaten the royal family, including the best sniper rifle in the world, a letter from Ye Qingmei to Wu Zhu, and a letter to Fan Xian. Fan Xian had broken into the empress dowager's bedroom at night and stolen the key. He inserted the key and used the five-stroke input method to enter Wu Zhu's name as the password. He had successfully opened the box with three layers of contents.
Qing Yu Nian opened Ye Qingmei's box. The box contained things that could threaten the royal family, including the best sniper rifle in the world, a letter from Ye Qingmei to Wu Zhu, and a letter to Fan Xian. Fan Xian had to break into the empress dowager's bedroom at night and steal the key. He inserted the key and used the five-stroke input method to enter Wu Zhu's name to successfully open the chest.
The key to the box left behind by Qing Mei in the middle of the year was finally with the Empress Dowager. Fan Xian successfully broke into the empress dowager's bedroom at night and stole the key. He worked with Wu Zhu to open the chest. However, there was no clear explanation as to why the key was with the Empress Dowager. Therefore, according to the information provided, the key to Qing Yu Nian was with the Empress Dowager.