The seller of the heavens

After Jiang Chen obtained the delivery system of the heavens, he began his life of delivering food across the heavens.

Give Doraemon a Dorayaki and reward Bamboo Dragonfly.

Give Hong Qigong a beggar chicken, and reward the Eighteen Dragon Subduing Palms.

Send ten altars of good wine to Jiu Jianxian, and reward Shushan's swordsmanship.

Send bananas and peaches to Monkey King at the foot of Wuzhi Mountain, and reward seventy-two transformations.

...

Jiang Chen was just silently delivering food, but before he knew it, he realized that he was already invincible.