The world would love to see every timeline's evidence, dear Gpit!
Certainly, but I'm not paid to do that. There are lots research works out there, both from Vietnam and China.
Here is one if you have chance to read to see how Vietnamese do not fully understand their history. Just a background for you: Vietnamese ancient history is mostly in Chinese, but not many Vietnamese understand Chinese today, so inevitably they make tons of mistakes, especially those youg undereducated jingoists.
李金明
越南黄沙、长沙非中国西沙南沙考Vietnamese claimed TruongSa/HoangSa's were not China's Nansha/Xisha Islands, The real locations of Truong Sa and Hoang Sa Islands were along the coast of Vietnamese shore, not Spratly Islands or Paracel Islands
《中国边疆史地研究》1997 年第2 期 ·学者论坛·