Hacker and Alien.

Summary

Song Ping is confused about a discrepancy in the "Work Notes," as Ma Shan, who was absent during the design process, is implicated. Ma Shan and Xu Meng visit "Oss Software Development University" to investigate the issue. Upon arrival, Song Ping hands the "Work Notes" to Ma Shan, who struggles to recall its contents. They meet Zhang Yu, an old classmate, who joins the discussion about an unresolved optimization program issue. As they reconnect, Zhang Yu observes changes in Song Ping, prompting reflections on their past and the unfolding mystery surrounding the design codes.

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