Mutagen - Chapter 2 Zombies?

The story is about a man whose compulsive tendencies make it impossible for him to keep a job, and a young girl who skips school and loves insects. The two meet, come to support each other in reintegrating into society, and fall in love. There’s a problem, however: namely, the parasites in their heads.

Always looked down upon by others, Ji Feng gains technology far more advanced than the present, as he discovers its abilities, he begins to walk a path far from ordinary. With X-ray vision allowing his to find jade stones in rocks. With this futuristic technology, Ji Feng accomplishes something no-one can compare to. This is the beginning of a legend.

- Description from Novelupdates

Kyle woke up in a land of fantasy and magitech. The usual 'I died and woke up' bullshit, skip all that.

Except he used to be a crime lord, and society here is missing that extra kick.

Rickshaw, toilet water, four detectives, Kowloon Flower Boat!

The swaying cheongsam girl, and the dreamy Xiangjiang!

Reborn Xiangjiang——

Shi Zhijian relied on a pile of king fried rice in his hand, and it blossomed everywhere!

- Description from novelbuddy