Chuang Chi-fa points out that local officials would every year list rain-water and harvest statistics, grain store values, and tributes paid. These are important reference materials for those studying the economic and social history of early Qing dynasty Taiwan.
莊吉發指出，地方官吏每年奏報的雨水收成、米糧價格，及進貢物產等，是研究清代經濟、社會情形，甚至台灣生態變化的重要參考資料。