First, let's look at how to type "Jane" in the construction. In architecture, you should type "Bi" first, then "II", then "Bi" and finally "Bi", that is, you should enclose the words in the lower part of the building and then type "Bi". In the same way, health preservation, because this keyword is more than four yards, so the gameplay of more than four yards is: the first radical+the second radical+the third radical+the last radical (the last radical), and the number is first (w), then (v), then (f) and finally (p). Its code is WVFP.