To solve this problem, we must trace it back to its source and solve this problem through the famous posts of famous people in the past. Please look at the picture below:
1. The cursive and cursive writing of the character [household] on the famous posters of past dynasties.
2. The cursive and cursive writing of the character [protect] in famous calligraphy of famous people in the past dynasties.
Judging from the running script and cursive writing of the characters [household] and [protect] above, the writing methods of [household] and [protect] are different and cannot be confused with each other.