PwC (PricewaterhouseCoopers): It is one of the world’s largest professional services firms and a member of the "Big Four" accounting networks, PwC is headquartered in London, UK, with a global presence spanning 152 countries and regions and a workforce of over 328,000 employees. The firm’s core services encompass audit, tax advisory, management consulting, and risk assurance, delivering end-to-end solutions to multinational corporations, government entities, and other organizations. In traditional audit services, PwC leverages intelligent tools such as the Halo analytics platform to enhance financial data verification efficiency. Its tax practice specializes in complex scenarios including cross-border tax planning and transfer pricing. The consulting division stands out with expertise in digital transformation (e.g., enterprise cloud migration), ESG strategy development, M&A advisory, and cybersecurity solutions. Recently, PwC launched its "Net Zero Future" initiative, assisting clients in designing carbon neutrality roadmaps and circular economy models. By combining global resources with localized insights, PwC drives industry innovation while upholding its mission to "build trust in society and solve important problems."