zhè / běn / shū / zhuān / mén / jiǎng / jiě / qī / zhèng / sì / yú / zài / mìng / lǐ / xué / zhōng / de / yìng / yòng这本书专门讲解七政四余在命理学中的应用。This book specifically explains the use of 七政四余 in traditional astrology.