West Wind Drift is ocean current that only continues in circle
around the circumference of the Earth, it brings the most volume of water of
all currents. It go around the earth, crossing the Atlantic, Indian, and
Pacific oceans; the cold Bengal, West Australian, and Peru currents branch off
from it in the oceans.
China’s geographic location is inherently land bound, as in not near the coast or ocean which hindered sea trading in the past. This hindered their development through trading via sea ports.