'The Song Of Prince' part 4

So I said that Great Master Youyong had to step down because Mu Luoxu was to be the director. So what happens to Zhang? His friends were happy to see him again, especially Fanlu, one of the technologists who went to Silla with Mu Luoxu and the others, as he had became Zhang's best friend. On the other hand, Fuyu Xuan was furious. Crown Prince Azuo(King Wideok's first son) was impressed by Zhang's determination and told him that he liked his personality very much.(Of course he didn't realise that he and Zhang were brothers! But anyway I think they did realise that they have a sort of connection between them.)