A Diary Sent from the Future: One Page Earns Me a Billion

On a sudden whim, Qi Guang solemnly wrote a passage in his diary:

[My descendants, I am your ancestor, Qi Guang.]

[If time machines have been invented in your era, then do your ancestor a favor!]

[First question: If I want to get rich, how do I earn my first pot of gold?]

As soon as he finished writing, a diary appeared out of nowhere and smacked Qi Guang on the head with a loud thump.

He opened it cautiously. The first page read:

[Dear Grandpa, this is a diary from the future...]

Qi Guang's eyes widened in shock.

Could just these few lines make me ten billion yuan?

Friendly reminder: [This book teaches you step by step how to craft a golden finger entirely by hand! Come check it out!]