def create_hand_record(context):
    """Create an empty hand and store it to the current hands.

    Args:
        context (dict): See function `create_score_records` above.

    Returns:
        A new dict object.
    """

    game = context['games'][-1]
    hands = game['hands']
    hand = dict(
        action_table=[],
        balance={},
        game=game, # parent
        seat_table=[None] * 4,
        start_hand_table=[None] * 4,
        dora_table=[],
        chows=[],
        pungs=[],
        kongs=[],)
    hands.append(hand)

    assert context['games'][-1]['hands'][-1] == hand
    return hand