 According to Dallas McCurley (2005:137) , the early Chinese believed that "the forces of rain, wind, flood, and drought often came to the climatically vulnerable Yellow River Valley from the sifang."
<clarity>  According to Dallas McCurley (2005:137) , the early Chinese believed that "the forces of rain, wind, flood, and drought often came to the climatically vulnerable Yellow River Valley from the sifang."
 According to Dallas McCurley , the early Chinese believed that "the forces of rain, wind, flood, and drought often came to the climatically vulnerable Yellow River Valley from the sifang."