Time Travel: Signing in to Heart Disease at the Beginning

Qin Mufeng once traveled to Tianxuan Continent. After traveling, he became a lonely prince and reunited with his girlfriend from his previous life. The two supported each other in a strange world and started a new life. The young man was high-spirited: "Kill one person in ten steps, and leave no trace in a thousand miles." However, there was an unexpected disaster. The previous emperor suddenly passed away because he led his army on a personal expedition. For a time, the country was like a candle in the wind and became precarious. The heaven and earth are on fire again and again; the building is about to collapse and no tree can hold it up. As a member of the royal family, can Qin Mufeng turn the tide, and what dangers and opportunities are waiting for him ahead? What will be the final outcome of the love-hate entanglement between him and his girlfriend who was also reincarnated in another world?