Reborn into Cultivation World

This is a story about a boy name Ling Feng who died on modern Earth full of regrets in life. But it seems like heaven had its own plan for him as he was given a second chance to live. But the thing is his second life was much harder than the first one as it was filled with hardship. Let's all witness, how Lin Feng would overturn this cultivation world with his system and even get the immortal realm on his side.