China is the world's most populous country with over 1.38 billion people and the second largest country by land area. It has the largest goods exports and became the world's largest economy in 2014, surpassing the US. China attestation is an obligatory procedure for emigrants to China, involving attesting documents like educational and professional certificates with the Chinese embassy in India to prove their authenticity before being granted a visa. China attestation is required for purposes like employment, education, and business and helps establish the genuineness of individuals and documents for dealings with China according to international law.