STFU, don't forget that you are all vassal states of CHINA from QIN(not Qing, in case you really don't understand...) Dynasty thousands years ago. Is your history teacher majored in physical education?
Vassal?
We have been indepedent for more than 1000 years. As far as I know the Viet´s emperors never took orders from Imperial China after independence. That´s true that ancient Vietnam delivered tributes every year to maintain peace and good relationship.
The term tributary state may fit better for Vietnam.
Vietnam
2879–258 Hồng Bàng Dynasty
257–207 Thục Dynasty
207–111 Triệu Dynasty
111–39
1st Chinese domination
40–43 Trưng Sisters
43–544
2nd Chinese domination
544–602 Early Lý Dynasty
602–938
3rd Chinese domination
939–967 Ngô Dynasty
968–980 Đinh Dynasty
980–1009 Early Lê Dynasty
1009–1225 Later Lý Dynasty
1225–1400 Trần Dynasty
1400–1407 Hồ Dynasty
1407–1427
4th Chinese domination
1428–1527 Later Lê Dynasty
1527–1592 Mạc Dynasty
1533–1788 Restored Lê Dynasty
1545–1787 • Trịnh Lords
1558–1777 • Nguyễn Lords
1778–1802 Tây Sơn Dynasty
1802–1945 Nguyễn Dynasty
1858–1945 • French imperialism
from 1945 Republic
History of Vietnam - Wikipedia, the free encyclopedia