"Big Four" refers to the four major accounting firms, which are the four most famous accounting firms in the world, namely: PricewaterhouseCoopers, Deloitte, KPMG and Ernst & Young.
At the end of 20 13, Ernst & Young established Ernst & Young Business Consulting (Dalian) Co., Ltd. in Dalian to provide basic audit and tax consulting services for Ernst & Young member companies in Greater China.