Looking at the second person, this one is dressed neatly, with hair as black as snow, a simple and cold face, clear eyes; at a glance you can see she is a cold and aloof woman, whom he does not know.
However, Hans not recognizing Yita does not mean he doesn't recognize Iman, because early models of expensive robots like Iman are not uncommon, many have the same face.
Upon seeing Iman, even Hans felt suspicious, suddenly realizing it's been four years; Hans especially remembers the time of economic hardship, when he had no choice but to return Iman to the factory in exchange for some working capital, despite being unwilling in his heart. But in extraordinary times, extraordinary measures must be taken. Besides painfully parting, Hans had no other choice.