Thats love whether syh did not acknowledged yww directly but indirectly you can sense the love of syh to yww by giving her the importance like forcing yan family to give tribute to fearless alliance. Monthly..
Whatever identity 9th brother has, whether he be Si Yehan or Lord Asura, when it comes to wanwan, he is just one and the same Si Ye. The wife doting over protectice husband. Hahahahahah