Nine significant Years of the Pig in Vietnamese history.

1.Year of the Pig (Ding Hai)(214 BC):General Tu Thu of the Qin dynasty led his army along the Ky Cung River (Lang Son) to invade Vietnam. Faced with the enemy's overwhelming force, the Vietnamese retreated into the deep forests to continue fighting under the leadership of Thuc Phan An Duong Vuong. The Qin army pursued but encountered strong resistance from the Vietnamese, who launched surprise attacks with bows and arrows, inflicting heavy losses on Tu Thu's soldiers. The Vietnamese war against the Qin lasted for many years. The Qin army suffered from food shortages and were surrounded by the Vietnamese on both advances and retreats. In 208 BC, General Tu Thu was killed, the Qin dynasty had to withdraw its troops, and Thuc Phan An Duong Vuong ascended the throne, establishing his capital in Co Loa (present-day Hanoi).

2. In the year of Quy Hoi (543), Pham Tu defeated the harassing Lam Ap army:After Lý Bí drove out the Liang army and gained control of all of Giao Châu, in 543, King Rudravarman I of Lâm Ấp led his army to plunder the Cửu Đức region (present-day Hà Tĩnh). Following Lý Bí's orders, Phạm Tu led his troops to defeat the Lâm Ấp army, stabilizing the southern border. After this victory, Lý Bí declared himself emperor and established the Vạn Xuân kingdom in 544.

3. Year of the Pig (939) - Ngo Quyen declared himself king, establishing a thousand-year independence:Following the victory at Bạch Đằng, in the spring of 939, Ngô Quyền declared himself king, establishing an independent state and becoming the founder of the Ngô Dynasty. According to historical documents, in the spring, the king began his reign, appointed Dương Thị as queen, established officials, codified court rituals and attire, created court ceremonies, defined the colors of clothing, and set his capital in Cổ Loa Citadel.

4. In the year of Dinh Hoi (1287) - The Mongol-Yuan army invaded our country for the second time:After being defeated twice by the Tran Dynasty, the Mongol-Yuan Empire still refused to abandon its ambition to invade Vietnam. According to the "Complete Chronicle of Dai Viet," at the end of 1287, the Yuan Emperor sent his son, Toghan, to invade Vietnam by both land and sea. However, this invading army was quickly defeated by the Tran Dynasty's army and people, under the command of Tran Hung Dao. The climax of this war was the third Battle of Bach Dang in March 1288.

5. The year of Dinh Hoi (1407) - The Ho Dynasty was defeated, and the country was invaded by the Ming army:After overthrowing the Tran dynasty, Ho Quy Ly and his son relentlessly built up their army, forged weapons, and constructed defensive lines to resist the Ming forces. However, due to a lack of popular support, the Ho dynasty's resistance quickly failed, and the country was under Ming rule for 20 years. The failure of Ho Quy Ly and his son serves as a valuable lesson for future generations, just as Prime Minister Ho Nguyen Truong once said: "I am not afraid of fighting the enemy, only afraid that the people's hearts will not follow."

6. Year of the Pig (1479) - Defeating the harassing forces of Lao Qua and Bon Man:During the Later Le Dynasty, Lao Qua and Bon Man, from Upper Laos, frequently harassed Vietnam with their troops. To protect the border, in 1479, Le Thanh Tong issued a decree to suppress them. The King and his generals commanded five armies, mobilizing up to 180,000 troops, divided into five routes, to defeat Lao Qua and Bon Man, stabilize the border, and then withdraw their troops.

7. The year Dinh Hoi (1527) - Mac Dang Dung established the Mac dynasty:In mid-1527, Mac Dang Dung forced King Le Cung Hoanh to abdicate in favor of the Mac dynasty, establishing the reign name Minh Duc. In the early period of their rule, the Mac dynasty built a strong and stable country in many aspects, especially in the field of examinations and the selection of talented individuals for the nation. However, later, the Mac dynasty weakened and was ultimately defeated by the Trinh lords in 1677.

8. In the year of Tan Hoi (1611) - Nguyen Hoang established sovereignty in Phu Yen:In 1611, due to continued harassment of the Hoa Anh border region by Champa forces, Nguyen Hoang ordered General Van Phong to lead troops to suppress them. The Champa army was quickly defeated by the Nguyen forces. King Po Nit of Champa had to retreat south of the Ca Pass. Subsequently, the Hoa Anh region was established as Phu Yen prefecture, comprising the two districts of Tuy Hoa and Dong Xuan, with Luong Van Chanh as the deputy commander and Van Phong as the governor.

9. The year of the Pig (1947)The Viet Bac Victory - Autumn-Winter 1947:The Viet Bac - Autumn-Winter 1947 victory is considered one of the three greatest military victories in the resistance war against the French. With this victory, our army completely defeated the French strategy of a quick victory, forcing the enemy to switch to a protracted war, opening up opportunities for us to have the time and conditions to both resist and rebuild the nation, creating the foundation for subsequent military victories.