A farmer was put in prison (监狱). One day, he got a letter from his wife. "I am worried about our farm," she wrote. It's time {#blank#}1{#/blank#} potatoes, but I can't do all the {#blank#}2{#/blank#} by myself." The farmer then had an idea. He wrote to his wife, "Don't dig the fields. This is {#blank#}3{#/blank#} my gold (金子) is." A few days later, the farmer got the {#blank#}4{#/blank#} letter. It said, "About ten guards (守卫) came to our farm. It {#blank#}5{#/blank#} they were looking for something. They dug our farm everywhere." The farmer wrote to his wife at once. "Now you can plant our potatoes," he wrote.