(The network solution technology is to use a directed network graph to express the sequence and logical relationship of each office in a plan; then calculate the time parameters to find out the important routes and available maneuvering time in the plan; in accordance with certain optimization policy, and continuously improve and optimize the plan arrangement, so that the plan can reach the overall optimization; and in the implementation process of the plan, by checking, controlling, and adjusting to ensure the realization of the plan policy on schedule)