Help! This savior is too stupid!

[Spiritual revival + Lao Liu + funny + memes + single female lead]
Spiritual revival, Jiang Bai accidentally came to the fifth mysterious tidal era. Everything he was familiar with passed away over the years. The world has changed, and the things and people have changed. The careers he once fought for have all turned into bubbles, and the past cannot be recalled.
In this chaotic and dark era, order has long collapsed, civilization no longer exists, and the shadow of death hangs over everyone's head.
In addition to surviving, Jiang Bai has another task to complete:
"Task number: 002."
"Task code: Cicada."
"Task content: Save all mankind."
"Task executor: Jiang Bai."
"Task in progress..."