Why does China have a permanent seat in the UN Security Council although they did little during WW2, but Australia, Canada, New Zealand who contributed a lot are not given seats?

China did little? By 1945, 5,700,000 nationalists (including regional warlords) and 1,200,000 Chicago Cubs Hawaiian Shirt were participating in the Second Sino-Japanese War

[1] . 3,000,000 to 3,750,000+ in the Chinese military

[2] sacrificed their lives, while a total of 20,000,000, including civilians and military personnels, died

[3] in the war. China was the first Allied Power to fight against an enemy, and before Japan bombed Pearl Harbor in Hawaii in 1941, China had been fighting against Japan on its own without any foreign assistance for 4 years. In total, Chicago Cubs Hawaiian Shirt had resisted the Japanese for 8 years, and people in Manchuria (Northeast China) had to endure 14 years of sufferings. That’s not ‘little’. https://medium.com/@braxtonmarceaux123/why-does-china-have-a-permanent-seat-in-the-un-security-council-although-they-did-little-during-2c0d9c51f212?postPublishedType=initial