its unofficial embassy out of Abuja, arguing that the African country was a defender of the One-China vision. This order came after Nigeria obtained a $40 billion investment pledge from China. In 2021, the two countries celebrated their 50 years of official relations. By 2100, it was estimated that the population of Nigeria will surpass the population of China. Treatment of Nigerians in China In April 2020, the foreign minister, Geoffrey Onyeama, condemned China's discriminatory attitude towards Nigerians, after a video emerged on the web showing Nigerian residents in China being discriminated against by locals. While Chinese officials said they took the issue very seriously, they also blamed Western media for emphasizing isolated events to feed a PR smear campaign over its Nigerian interests. In November 2020, the Chinese government blocked entry to China for all foreigners, including Nigerians, over COVID-19 concerns, except for "essential services" including diplomatic service. It was reported that Nigerians in China were placed on lockdown for more than the average 2-week quarantine a Chinese citizen would experience. Military In 2015, a China-made drone crashed in the countryside of Nigeria. It is believed the drone was involved in Nigeria's struggle against the Islamic militant group, Boko Haram. China supplied the CH-3 to Nigeria's government prior to 2014, along with YC-200 guided bombs and AR-1 air-to-ground missiles. In 2020, the Nigerian Air Force (NAF) Chief, Air Marshal Sadique Abubakar, disclosed that the NAF has concluded the acquisition of eight Wing Loong II, CH-4, and CH-3 drones. Commerce Bilateral trade reached US$3 billion in 2006 – up from $384 million in 1998. During Chinese President Hu Jintao's visit in 2006, China secured four oil drilling licenses and agreed to invest $4 billion in oil and infrastructure development projects in Nigeria, and both nations agreed to a four-point plan to improve bilateral relations – a key component of which was to expand trade and investments in agriculture, telecommunications, energy, and infrastructure development. Furthermore, China agreed to buy a controlling stake in the Kaduna oil refinery that would produce . Nigeria also promised to give preference to Chinese oil firms for contracts for oil exploration in the Niger Delta and Chad Basin. In 2006, China also agreed to grant a loan of $1 billion to Nigeria to help it upgrade and modernize its railway networks. In 2005, Nigeria agreed to supply PetroChina with of oil for $800 million. In 2006,