Control over the western provinces of China reopened the Silk Road , allowing trade between China and the regions to its west to flourish .
Taizong and his son 's conquest of the Gokturk , Xueyantue , Gorguryeo and other enemy empires ensured relative peace for China .
Control over the western provinces of China reopened the Silk Road , allowing trade between China and the regions to China 's west to flourish .
Taizong and his son 's conquest of the Gokturk , Xueyantue , Gorguryeo and other enemy empires ensured relative peace for China .