IFRS 16 and CAS 4 (Chinese Accounting Standard for Government Subsidies) are two different accounting standards that address distinct financial reporting aspects. IFRS 16, or International Financial Reporting Standard 16, deals with the accounting for leases, requiring lessees to recognize most leases on their balance sheet, treating them as a financing activity rather than an operating lease. On the other hand, CAS 4, also known as Chinese Accounting Standard No. 4, 'Leases,' is the Chinese equivalent to IFRS 16, but there might be specific differences in the treatment and disclosure requirements based on the Chinese regulatory environment. The exact differences between IFRS 16 and CAS 4 would depend on the specific nuances within the Chinese standard, which could include variations in areas such as recognition criteria, measurement principles, and disclosure requirements. However, both standards aim to provide a transparent and comparable presentation of lease transactions in the financial statements.