Although Xu Zhiliang had a stutter, he was exceptionally smart.
He was able to join Yang Ping's team because of Yang Ping's astute judgment. Otherwise, he would still be biding his time in the emergency department.
He had no interest in going abroad. All he wanted was to stay in the ward quietly, studying earnestly under Yang Ping's guidance.
Just like a newcomer in the martial arts world, studying secluded with a master for years, he could stand on his own in the proverbial world of jianghu. And this master was Yang Ping.
Whilst Yang Ping could perform surgery anywhere, Song Zimo was the best assistant. Xu Zhiliang still needed to hone his skills; he was better suited to stay behind.
Especially since Yang Ping was going to Japan for surgery, with the operation posing a high risk, any lack of coordination could introduce a considerable risk to the procedure. Xu Zhiliang was very self-aware.
Self-knowledge is valuable.