1, Hubei Shiyan's soil is more fertile, loose, breathable and well-drained, suitable for the growth of olive trees, at the same time, the Yangtze River flows through Hubei Shiyan, water resources are sufficient, but also conducive to the planting and development of crops.

2, most of the soil in Bazhong, Sichuan is red soil or loess, with poor drainage and lack of fertility, which is not favorable enough for the growth of olive.