If the historical Qin Shi Huang did not die early, but continued to rule for a long time, then whether Liu Bang and Xiang Yu still have a chance to compete in the world is a very hypothetical question.
This needs to be analyzed from the characteristics of Qin Shi Huang's rule, the domestic and foreign situation of the Qin Dynasty, and the personal abilities and circumstances of Liu Bang and Xiang Yu.
During the reign of Qin Shi Huang, a powerful Qin dynasty was established through centralized power and a strict legal system. If Qin Shi Huang remained in power, he would likely continue to consolidate his rule and strengthen the centralized system.
This would make it difficult for any rebellious force to form an effective scale and strength. In this case, if Liu Bang and Xiang Yu want to rise, they will face great difficulty.
During the reign of Qin Shi Huang, large-scale military conquests and state construction projects were carried out, such as the construction of the Great Wall and the construction of imperial tombs, which consumed a lot of manpower and material resources.
If Qin Shi Huang continued to rule, such high-pressure and high-intensity policies could further exacerbate social contradictions and popular discontent, thus providing a potential mass base for anti-Qin forces such as Liu Bang and Xiang Yu.
Although Qin Shi Huang was an imposing emperor, his rule had its own problems, such as overly strict laws and heavy taxes.
If these problems were not effectively resolved, it could lead to internal turmoil in the Qin Dynasty, thus providing opportunities for Liu Bang and Xiang Yu and others.
Even if there were internal problems in the Qin Dynasty, whether Liu Bang and Xiang Yu could seize the opportunity depended on their own ability and timing.
The rise of Liu Bang and Xiang Yu in history has a lot to do with the chaos and power vacuum in the last years of the Qin Dynasty. If Qin Shi Huang had been around, this power vacuum might not have arisen, and they would face more challenges if they were to rise.