Datang: Travel Through Time and Become Qin Qiong's Eldest Son

[Datang + single female protagonist + sign-in system + easy and funny] Li An traveled through time and became Qin Qiong's long-lost illegitimate son Qin Huaian. He had just finished the funeral for his adoptive mother and decided to guard the land left by his adoptive mother and live a "Buddhist" life. One day, the system is activated, and the first sign-in reward is [100 Dark Guard Dead Soldiers].