― Imagine following scenario. You walk with your Chinese mother in law. She insists on pushing the stroller. You, being polite, let her do it, even though you actually would like to do it. After a while you notice, that she struggles a little bit. You're going uphill and it's obviously to much for her. You offer to push the stroller again, she refuses. She continues to push the stroller. Back at home your mother in law complains to your wife, that you didn't push the stroller, and that she had to [...].