Another year, another round of Google Summer of Code! The ReactOS Project is participating in Google Summer of Code 2021 and welcomes the selected students. He Yang is a successful student from GSoC 2020, who is going to continue his dive into user-mode ReactOS this year by working on iernonce.dll. That library is responsible for RunOnceEx, a prominent Windows feature to run multiple commands once after a system reboot. Implementing that feature will benefit software depending on it.