What if my husband goes to play cards without telling me?

If you do confirm that your husband has gone to play cards, then you must never go to the poker game to make a scene, because your husband will be ashamed to hide it from you, which shows that he cares about your feelings. After he returns to China, you should have a good communication with him, and never have a cold war with him and make a scene. In that case, the result will be very bad. Explain how you feel in your heart, your concern for him and so on. I think your husband will accept your suggestion.