What chineses think about Vietnam called themselves as '漢' and '中國? and share same myths?
I saw Vietnam's Foundation myth is similar with china, also Share same Foundation myths. Not real Decendants of Shennong, but they called this. Decendants of Shennong 神農氏(chinese myth's god) Vietnamese called 'Lac long quan' made Vietnamese dynasty. So follow to Vietnam's Foundation myth, China and vietnam have same myth.
And Many of records in Vietnamese dynasty called themselves as 'Southern dynasty(南朝)' and they called chinese dynasty as 'Northen dynasty(北朝)' sometimes Vietnameses wrote themselves as 'Han(漢), Central kingdom(中國)'
So China called themselves as 中國, and Vietnam also called themselves as 中國.
What do think about these things.
Also how Chinese dynasty and Chinese reacted about these?