Can villagers write "comrade" when sending banners?

Yes.

When sending a banner, you can write Comrade XX.

There are many ways to express gratitude, and sending a pennant is one of them. A banner is a Chinese word whose pinyin is jǐn qí. It is a flag made of colorful silk and satin. It is awarded to the winners in competitions or production labor, or given to groups or individuals to express respect, gratitude, etc. Generally, sending a banner is a good way to express gratitude. For the person who gives it, it is economical and affordable, and for the person who is given it, it is recognition and honor. It is a win-win situation! For example, parents of students can send banners to express their gratitude to the school for nurturing their children; if a doctor treats a patient, his family members can send banners to the doctor, etc. Also thank the police, confinement nanny, coach, matchmaker? and many more situations where banners are given out of gratitude. The banner is not simply a material thing, but more importantly, it is a spiritual carrier, which is the so-called "courtesy is light on etiquette but sentiment is heavy on friendship." The gift of the banner really showed his dedication, seriousness and efficient work attitude. I was very touched. It was a great help and I gave him the banner.