1. Huo Ling'er was captured by An Lan:
Huo Ling'er and Shi Hao met in the lower realm, experienced many things together, and had a deep relationship. After meeting in the upper realm, their feelings grew stronger. Under the auspices of the Fire Emperor, Shi Hao and Huo Ling'er held a simple wedding. However, during the Borderland War, the Immortal King An Lan, in search of the ultimate object, crossed the Imperial Pass and captured the entire Sin State, and Huo Ling'er happened to be on it. At that time, Shi Hao was only a cultivator of the Escape Realm. Although he had the temporary combat power of the Immortal King by borrowing the ancient blood of reincarnation, he was powerless in the face of the joint efforts of An Lan and Yu Tuo, and could only watch Sin State being captured. This was a great regret in Shi Hao's heart. Although Shi Hao eventually took Huo Ling'er back after becoming the Immortal Emperor, the long wait and the pain of separation were always a scar in his heart.

2. Willow God died in battle:
The Willow God is of great significance to Shi Hao. He is the guide and guardian of Shi Hao's growth. The Willow God was originally powerful, and later he was reborn as a half-step quasi-immortal emperor. Shi Hao regards the Willow God as a relative, and so does the Willow God. In order to help Shi Hao, the Willow God knew that he was no match for the dark quasi-immortal emperor, but he eventually died with the other party at the cost of his life. The death of the Willow God was hard for Shi Hao to accept. He often sat beside the remaining stump of the Willow God. The departure of the Willow God was an eternal pain in Shi Hao's heart.

3. Family members and friends passed away one after another:
Shi Hao has experienced eternity and stood at the top of the world, but his relatives and friends have passed away one after another. Shi Hao can make decisions for eternity and save the world, but he cannot keep his loved ones. Friends like the exiled immortal, Mu Qing, Taiyin Jade Rabbit, Cao Yusheng, Dugu Yun, as well as his own son Xiao Shitou, his younger brother Qin Hao, and his cousin Chongtong Shi Yi, all sacrificed their lives to help him in the war. Shi Hao is invincible in the world, but he feels lonely. This feeling of being alone and empty is an unspeakable regret in his heart.

4. Sacrifice of the only son:
Shi Hao and Yun Xi's son, Shitou, was born in the dark turmoil. He was born with a strange phenomenon in the sky and earth, and was named Shi Fan. He cultivated to the realm of Immortal King. When Shi Hao fought against the three dark emperors, he sacrificed himself to help his father regain his peak combat power. With his only son gone, Shi Hao felt regretful and painful.

5. Failure to catch up with Willow God:
Willow God is the enlightener and important guide of Shi Hao's cultivation. Shi Hao has great respect and yearning for Willow God, and has been trying to follow in his footsteps, eager to be with him. However, Willow God's realm and strength are unfathomable. Although Shi Hao continues to grow and break through, he still feels that he has not really caught up with Willow God. When Shi Hao was dying, he met Willow God again and regretted that he could not reach the height of Willow God. However, he did not regret his choice, as he said, "Just because my home is here, I should go all out to the death."

6. The Great Demon God failed to see him for the last time:
The Great Demon God Fifteen is Shi Hao's grandfather. He dotes on Shi Hao and even causes a big commotion in the Rain Clan and the Wuwang Mansion for Shi Hao, and even loses an arm. Shi Hao and the Great Demon God have a deep relationship. Although they have time together, they are often apart. Later, due to the changes in the laws of heaven and earth, the end of the law era is coming. In order to protect his grandfather from the erosion of time, Shi Hao sealed him with tears and waited for the right time to unseal him. However, until the plot of the novel "Sacred Ruins", the Great Demon God broke through the seal and fought a battle with Emperor Chu Tian, but was defeated and retired. In the end, he was unable to see Shi Hao for the last time, which became Shi Hao's regret.

7. Ye Qingxian's disappearance:
Ye Qingxian came to the Shi Hao era with the help of the weapon soul of the Immortal King Wuzhong, and met Shi Hao on the bloody battlefield. She was naughty, cunning but extremely powerful, and gave Shi Hao a lot of help, such as helping Shi Hao escape from trouble in the City of Heaven, receiving him in the Border Wasteland Imperial Pass when he was neglected, and helping Shi Hao to overcome the Immortal King Tribulation. Although Ye Qingxian was only a brand and a consciousness, her disappearance still made Shi Hao sad and left him with regrets.
