Heroic Spirits Awaken: Is It Really So Reasonable for Me to Summon a Divine Dragon?

[Spiritual qi revival + stockpiling + ruthless protagonist + no female lead + deal with the do-gooders first + heroic spirit awakening] The void shattered, blood rained from the sky, and the world changed. All things revived and gained intelligence. In just one day, Earth was transformed. Soon, people discovered that they could awaken heroic spirits. Some had the surname Qin and carried the bloodline of the Qin family, awakening Qin Shi Huang, Qin Qiong, and others. Some had the surname Zhao and carried the bloodline of the Zhao family, awakening Zhao Kuangyin, Zhao Guangyi, and others. Some had the surname Xiang and carried the bloodline of the Xiang family, awakening Xiang Yu, Xiang Yan, and others. Every heroic spirit had a rank. The strongest were SSS-rank, while the weakest were only F-rank. In his previous life, Jiang Yanbing summoned Jiang Wei. But in this apocalypse, where heroes rose from every corner, that was merely average: just B-rank. Because he was weak, his girlfriend betrayed him, his organization stabbed him in the back and abandoned him, and he died in a long-planned scheme. After transmigrating back, Jiang Yanbing decided to trust no one. The strong were the only ones who mattered. Some mythological figures could also be summoned, such as Pangu, Dao Ancestor Hongjun, Demon Ancestor Luohou, and Nuwa. In his previous life, a lucky person smeared blood on a statue of Pangu and obtained Pangu as a heroic spirit. To summon a god, all you had to do was spill your blood on its statue, and you might awaken that god as a heroic spirit. By the time Jiang Yanbing learned this secret, almost every god had already been claimed. Transmigrating back gave him a chance to get ahead of everyone else. Jiang Yanbing chose a temple in the barren hills near his home. The temple enshrined the strongest god… and then he was able to summon the Dragon God.