I. INTRODUCTION
II. BACKGROUND IN DEFI
A. DeFi overview
B. Chain layer
C. DeFi primitive layer
D. Aggregation layer
III. YIELD FARMING PRELIMINARIES
A. Types of yield farming protocols
B. Yield farming operations
C. Forms of yield farming pools
D. Sources of yield
E. Revenue model of yield farming protocols
IV. YIELD FARMING RISKS
A. Security risks
B. Economic risks
V. RELATED WORK
A. Yield farming
B. DeFi platforms
C. Related DeFi protocols
VI. CONCLUSION