QiJiu

QiJiu is the slash ship between Yue Qingyuan and Shen Jiu from the Scum Villain's Self-Saving System fandom.

Canon
Yue Qingyuan and Shen Jiu are from the novel Ren Zha Fanpai Zijiu Xi Tong or The Scum Villain's Self-Saving System by Mo Xiang Tong Xiu (MXTX).

Life with the Human Traffickers
In their youth, Yue Qi (Yue Qingyuan's original name) and Shen Jiu had been slaves, both of them victims of human trafficking. Shen Jiu was extremely close friends with Yue Qi whom he affectionately referred to as 'Qi-ge', to the point of exploding if any other children called him by that moniker. Yue Qi was the oldest and the most responsible of the slaves owned by the traffickers, and would frequently break up fights between them (usually started by Shen Jiu). It was this same sense of responsibility that led to his attempt to help one of the slaves they knew when he was being beaten by Qiu Jianluo.

Qiu Household
Heedless of Shen Jiu's warnings to avoid being caught in the cross-fire, Yue Qi had found this slave about to be trampled by Qiu Jianluo's horse, leading to Yue Qi and Shen Jiu to be captured by the Qiu household during his teenage years. When Yue Qi got old enough to escape, he promised to rescue Shen Jiu from the abusive Qiu household once he got stronger. After Yue Qi escaped, him and Shen Jiu never met again.

Yue Qi enters Cang Qiong Mountain
Yue Qi, well, Yue Qingyuan entered the Qiong Ding Peak at 15. Impatient to fulfil his promise to Shen Jiu, Yue Qingyuan recklessly pursued the  'Way of Unity of Man and Sword'. Unfortunately, he failed and instead experienced a qi deviation.

After this incident, Yue Qingyuan had to start from scratch with his body and his meridian. His Shizun gave up on him, and locked him up in the spirit caves. He was only allowed to exit after using all his energy and effort, but by that time, several days had already passed since the Qiu household's destruction.

Reunited with Shen Jiu
Later, Shen Jiu showed up at the Immortal Alliance Conference serving wandering cultivator Wu Yanzi. Shen Jiu murdered his master to save Yue Qingyuan's life. Shen Jiu believed Yue Qingyuan didn't come back for him intentionally, Shen Jiu lashed out to him and Yue Qingyuan's lack of explanation widened the distance between them.

Cang Qiong Mountain
Yue Qingyuan and Shen Jiu has this difficult relationship stemming from their past. Their relationship is so bad that any conversations they tried to have would end on bad terms within 5 phrases. Despite Shen Jiu's apparent hatred of Yue Qingyuan, he kept on favoring Shen Qingqiu above his other martial sibling to the point of giving him preferential treatment and expressed a willingness to involve Cang Qiong in a war in order to protect Shen Jiu.

The rift between them remained until Shen Jiu was captured by Luo Binghe in the Water Prison. Yue Qingyuan came to visit him and Shen Jiu realized that Yue Qingyuan has been very lenient and gentle toward him all this time. Shen Jiu decided to forgive Yue Qingyuan but he expressed this by pushing him away, believing Yue Qingyuan would abandon him and thus be safe from Luo Binghe.

Luo Binghe's Trap
In order to rescue Shen Jiu from the darkened Luo Binghe, Yue Qingyuan fell for a trap and was killed with ten thousand arrows piercing through his body — it was also stated that even his skeleton was grinded into powder.

One day, a box was sent to Cang Qiong Mountain. Inside, Yue Qingyuan found a letter from Luo Binghe threatening him to meet in battle. Inside the box was Shen Jiu's decapitated legs. Yue Qingyuan was aware that it was a trap, but despite the matter, he still took the bait out of loyalty and guilt. Yue Qingyuan was pierced by ten thousand arrows, before succumbing to his wounds.

The Scum Villain's Self-Saving System
After Shen Yuan transmigrated into Shen Jiu's body, he was greeted by Yue Qingyuan, who was patiently waiting for him to wake up. Apparently, Shen Jiu's soul was (believed to be) pushed out of his body and was replaced by Shen Yuan's.

Fanon
This ship is one of the lesser known ships in the Scum Villain fandom.

Many fans like to headcanon that Yue Qingyuan and Shen Jiu were connected by the red string of fate, but since Shen Yuan replaced Shen Jiu's soul, the string had been cut off.

Fandom

 * FAN FICTION
 * Shěn Jiǔ | Original Shěn Qīngqiū/Yuè Qīngyuán tag on AO3
 * TWITTER
 * QiJiu posts on Twitter
 * QiJiu hastag on Twitter
 * TUMBLR
 * QiJiu posts on Tumblr
 * TUMBLR
 * QiJiu posts on Tumblr

Trivia

 * Many fans believe that Yue Qingyuan and Shen Jiu were soulmates, the two bound by the red string of fate.
 * But unfortunately, after Shen Yuan transmigrated the red string had been cut off.
 * 'QiJiu' literally means '79' in Chinese.
 * Coincidentally, the chapter where Yue Qingyuan apologized to Shen Jiu was on chapter 79 of the webnovel. Unfortunately, at that time, Shen Jiu was no more, and all that's left was Shen Yuan in Shen Jiu's body.
 * "No wonder no matter how much trouble “Shen Qingqiu” caused, the Sect Master had never punished him for it. He had always shown him unlimited forgiveness and infinite patience. No wonder Shen Jiu hadn't been able to wait for the person who was coming back to save him. Yue Qingyuan, Shen Qingqiu; Yue Qi, Shen Jiu." — Passage from Chapter 79 of the webnovel