Although Ed had actively "laid down his arms and surrendered," making it clear that the City of Gods army had utterly collapsed and he himself had no desire to continue fighting,
he conversely wanted to have a chat with Han Dong about some "family matters"...
Han Dong, during his lifetime, occasionally had dealings with the computer scientists from the academy and was well aware that their way of thinking was unpredictable and often not on the same wavelength.
But the changes in front of him were happening too rapidly, and they involved such an important "True Node."
Han Dong had started the war with the intention of fighting a decisive battle to the death with Ed.
"Shall we have a chat?"
"Sure!"
Although Han Dong verbally agreed, he remained extremely cautious inwardly.
It could be that Ed suffered from a split personality, or in his quest for victory, he wouldn't hesitate to use this tactic to catch Han Dong off guard.