What did the Sui do for China?

Could you please elaborate on the significant contributions the Sui Dynasty made to China? Could you describe how their advancements in various fields, such as engineering, culture, and politics, influenced the development of China? Additionally, how did their policies and innovations contribute to the prosperity and stability of the country during their reign? Could you also mention any specific examples or landmarks from the Sui Dynasty that have left a lasting impact on China's history?