Lingnan
Background
Background
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The area was inhabited by the [Baiyue](/wiki/Baiyue "Baiyue") and was the base of the ancient kingdom of [Nanyue](/wiki/Nanyue "Nanyue"). At that time, Lingnan was considered by the ancient Chinese court to be a tropical barbarian land that had no contact with the [Zhongyuan](/wiki/Zhongyuan "Zhongyuan"), which was the cultural cradle of [Chinese culture](/wiki/Chinese_culture "Chinese culture").

In the second century BCE, the [Han conquest of Nanyue](/wiki/Han_conquest_of_Nanyue "Han conquest of Nanyue") led to its absorption into the [Han dynasty](/wiki/Han_dynasty "Han dynasty") during its [southward expansion](/wiki/Southward_expansion_of_the_Han_dynasty "Southward expansion of the Han dynasty"), and its development was boosted once the [Mei Pass](/wiki/Mei_Pass "Mei Pass") was paved. The region was also the base of the Kingdom of [Southern Han](/wiki/Southern_Han "Southern Han") (917–971\).


Why is it important to understand the network problem identified by the author?