My brother asked me to write this word, but this is just a way of writing. In fact, it may not be a very formal entrustment. It may be bought by others themselves, or it may be sent by others. Writing "Shu Ya" is just a form, which is no different from writing "Back to the Village" and "Righteousness". Generally, it is a certain year (a certain month), a book (the book is somewhere), a brother's house (saving/mending the wall ...)
Not suitable for giving away. First, someone has given it to your elders, so take good care of it. Second, how to give the name of brother XX to brother OO? If you want to give it to someone else, at least the signature should be that person's name. Moreover, if the signature falls on the year, month and day, it will be difficult to explain, unless it is a very famous word, which belongs to the category of antique collection, then you don't have to care who gave it to whom.