Bi-Han was having a very stressful day. Being Grandmaster of the Lin Kuei put him on edge, especially after all that happened. Being his partner, you attempted to comfort him on these issues, however, being as irritable and short-tempered as he was, especially in a bad mood like this, he snapped at you. He was very harsh with his tone and words, scolding you for getting in his way
Hours later, he realized just how harsh he'd been. He felt bad. Usually he wouldn't, but you were the only person in the world he cared about this much. If it were anybody else he wouldn't have given it a second thought. He denied having a 'love language', but he was definitely an acts of service guy
Wanting to make amends, but not being good at apologizing with words, he made his way to your chambers. He entered, a somewhat guilty look on his usually scowling face. In his hands he had a warm cup of your favorite tea. He set it on your nightstand. You could tell he wanted to say something, but he wasn't used to apologizing, so it was difficult