China provided significant support for North Vietnam when the US started to intervene, including financial aid and the deployment of hundreds of thousands of military personnel in support roles. China said its military and economic aid to North Vietnam totaled $20 billion ($160 billion adjusted for 2022 prices) during the Vietnam War; included were 5 million tons of food to North Vietnam (equivalent to a year's food production), accounting for 10–15% of their food supply by the 1970s.
China provided significant support for North Vietnam when the US started to intervene, including financial aid and the deployment of hundreds of thousands of military personnel in support roles. China said its military and economic aid to North Vietnam totaled $20 billion ($160 billion adjusted for 2022 prices) during the Vietnam War; included were 5 million tons of food to North Vietnam (equivalent to a year's food production), accounting for 10–15% of their food supply by the 1970s.