The group of besieged was the meeting place of every nation, so mutual agreement was an important issue, and Goro SHIBA, who had multi-language skills in English, French, and Chinese, took part in negotiations and contributed greatly to the understanding of all parties.
籠城組は各国の寄り合い所帯であったため、まず意思疎通が大きな問題となったが、英語・フランス語・中国語と数ヶ国語に精通する柴中佐はよく間に立って相互理解に大きな役割を果たした。