To print the running water of the last six months in Meituan Merchant Edition, you can follow the following steps:

Open the Meituan merchant APP and log in to the account. Enter the "Statistics" page and select the "Financial Statements" option. On the financial statement page, select the "Daily Account" option. On the Running Bill page, you can select the "Custom Time" option, and select the start time and end time to filter the running bills in the last six months. After selecting the time period, click the "Print" button in the upper right corner of the page to print out the running account of the last six months.