Another of Chiang's innovations is "postnatal correspondence." Workers at the center collect the names and addresses of all lying-in women, and then write a letter to congratulate them and introduce them to contraceptive services.
產後通信，也是江千代想出來的好「點子」：由家計中心人員到戶政機關抄錄新生兒母親的地址和姓名，然後去信道賀。