During the reporting period of Ningxia Water Conservancy Fund, the actual sales income or operating income of this period shall be assessed on a monthly basis. Declare and pay within ten days after the end of the month. In order to strengthen the collection and management of water conservancy construction funds, these measures are formulated in accordance with the relevant provisions of the Notice of the People's Government of the Autonomous Region on Printing and Distributing the Detailed Rules for the Implementation of the Management of Raising and Using Water Conservancy Construction Funds in Ningxia Hui Autonomous Region and the Notice of the People's Government of the Autonomous Region on Collecting Water Conservancy Construction Funds. According to the actual sales income or operating income of the current period, the collection business households shall collect it on a monthly basis. Declare and pay within ten days after the end of the month.