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