Warlord of Republican China: Starting as an Undercover Cop

Republican-era tycoon System + political infighting + military power struggles + spend money to earn rebates and exploit every loophole: spend your way to becoming a super marshal.

Wang Qingyun transmigrates into a Republic of China that is similar to, but not quite, the real one. With no System, he struggles to survive for eight years. Thanks to his elderly father's support, who spends the family's entire fortune and even takes out loans, he finally graduates from the Chengdu Police Academy.

He thought that with his own hard work and the influence of the internet in his previous life, he could finally become a civil servant and carry a gun. But on his very first day at work, he's sent undercover into the Qinglong Gang...

After forcing himself to act cool and sleeping with two beautiful women, the System appears, setting him on an unconventional path to becoming an overbearing tycoon...