Complex sentence: When a famine broke out in Xu Province, the provincial governor Tao Qian invited Chen Deng to serve as Colonel of Agriculture (典農校尉) to survey lands and assess their suitability for growing crops, and then implement agricultural and irrigation works accordingly.
Split into simpler sentences: When a famine broke out in Xu Province, the provincial governor Tao Qian invited Chen Deng to serve as Colonel of Agriculture (典農校尉). During this time, Chen Deng surveyed the lands, assessed their suitability for growing crops, and then implemented agricultural and irrigation works accordingly.