The matter of exchanging captured intelligence personnel was already brought up by the other side when Luo Ziling first came into contact with the people from the intelligence department.
Luo Ziling felt that Ishihara Tarou wielded enormous influence in Japan, and since his son was still the head of an important department in the intelligence service, using threats against Ishihara Tarou to achieve a spy swap shouldn't be difficult, so he agreed.
However, the toughness and complexity of the negotiations went far beyond what Luo Ziling had imagined, and they dragged on for much longer.
That said, this intelligence officer named Wu Shanggao was actually quite capable, and in the clash with Ishihara Tarou he maintained the initiative throughout the talks. With Luo Ziling's support on top of that, Ishihara Tarou finally accepted the condition.
If the exchange succeeded, the matter of Ishihara Naka taking part in espionage activities would be glossed over.
