Update documentation

docs/Milestone.md

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-# Archived Milestones
+# Achieved Milestones
 
 Milestone 0: Design a Domain Model with a Focus on Mina zk Privacy.
 Develop a privacy-focused model for AdMeta by leveraging Mina’s zero-knowledge proofs for secure and confidential score storage.

docs/Tutorial.md

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 # AdMeta Dapp Tutorial
 
 TL;DR The following steps walk you through the whole process of how AdMeta works together with Mina Berkeley testnet and Ethereum Testnet, and it requires you to have both wallets from these two testnets and sufficient balances. If you just want to understand how it works, this video demonstrates it in a clear way:
+
 [![Demo Video](https://img.youtube.com/vi/DTSoZLiz3HM/hqdefault.jpg)](https://www.youtube.com/watch?v=DTSoZLiz3HM)
 
 ## 1. Running the Dapp

docs/WhyMina.md

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+# Why Mina?
+
+AdMeta is a decentralized advertising protocol focused on meeting the needs between users and advertisers. In order to protect user privacy, AdMeta uses zk to complete the verification of user identity information and apply it to the matching of advertising algorithms. AdMeta needs to support different blockchain networks at the same time to meet the needs of project parties and users in different ecosystems.
+
+Therefore, Mina is a very ideal solution for AdMeta. By integrating o1js, we can use Mina to complete zk proof of user information, and also meet the cross-chain needs of AdMeta.
+
+We plan to expand our current data model in Mina in the future and improve our user interaction experience so that we can make full use of Mina while also giving users the best experience.

docs/index.md

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 ### [Overview](./Introduction.md)
 
+### [Why Mina](./DeployInfo.md)
+
 ### [Software Architecture](./Architecture.md)
 
 ### [Get Started](./Tutorial.md)