Electives

恭喜你已经完成了前面课程的学习，掌握了 XION 区块链的基础和核心技能，现在你离真正的毕业只差一步了，请设计一个简易的“社交打赏平台”。

XION 旨在通过链抽象简化智能合约和应用功能来推动 Web3 的大规模应用。在本课程中，你将学习 XION 的链抽象的工作机制，并逐步深入了解 XION 的核心技术。

Congratulations on completing the previous courses and mastering the fundamentals and core skills of XION, now you're just one step away from graduation, designing a simple Social Tipping Platform.

XION aims to drive large-scale adoption of Web3 by simplifying smart contract and application functionality through chain abstraction. In this course, you will learn how XION’s Chain Abstraction works and compare it with Ethereum’s account abstraction, gradually gaining an in-depth understanding of XION’s core technologies.

XION is the only layer-1 blockchain specifically built for consumer adoption, with the mission of making Web3 technology more accessible and inclusive for everyone. In this course, you will learn the basic concepts of XION, set up the development environment, and explore the blockchain explorer, gradually gaining a deeper understanding of XION’s core technologies.

XION 是用户体验最好的网络，它通过协议级的通用抽象层提升用户体验（UX）。在本课程中，你将学习 XION 的基础概念、开发环境搭建以及区块链浏览器等内容，逐步深入了解 XION 的核心技术。

In this course, we will learn about Gaia, a decentralized computing infrastructure, including its conceptual and technical architecture, as well as the features and benefits that differentiate it from other ecosystems, so that we can have a comprehensive understanding of the entire ecosystem before learning how to build and apply Gaia.

在本课程中，我们将深入学习 Gaia 这一去中心化 AI 基础设施，涵盖其核心概念与技术架构，探讨它与其他生态系统的区别、独特优势以及发展潜力。同时，我们还将学习如何搭建和应用 Gaia，帮助你在动手实践前对整个生态系统有一个全面的理解。

This course will cover fundamental knowledge of artificial intelligence, including machine learning and neural networks, as well as techniques for developing large models, such as pre-training and fine-tuning.

本课程将学习机器学习、神经网络等人工智能基础知识，以及预训练、微调等大模型开发技术。

Telos includes Telos EVM and Telos Zero. In this course, you will learn the basic concepts, unique properties, related technical implementations, and commonly used development tools of Telos.

Telos 是一个综合性网络，它提供了 Telos EVM 和 Telos Zero 两种链。在本课程中，你将会学习 Telos 的基础概念、独特属性、相关技术实现及常用的开发工具，一点点揭开 Telos 的神秘面纱。

In this course, we will learn about the history of Sui, its object model, the principles behind transactions, and its ecosystem and projects.

在本课程中，我们将学习 Sui 的发展历史、对象模型、交易原理以及它的生态系统和项目等内容。

This course will cover common security risks and protective measures in Web3. You will learn about wallet risks, the security of private keys and mnemonics, security risks of digital signatures, common fraud tactics, and defensive measures and theft handling methods, helping you safeguard your digital assets.

本课程将介绍Web3中的常见安全风险和防护措施。您将学习钱包风险、私钥和助记词的安全、数字签名的安全风险、常见的欺诈手段，以及防御措施和被盗处理方法，帮助您保护数字资产。

This course aims to provide a comprehensive introduction to the key concepts and techniques of smart contract security. The content covers reentrancy attacks, access control, flash loan attacks, DOS attacks, transaction frontrunning, replay attacks, oracle issues, common attacks on ERC20, common attacks on NFTs, and other smart contract security issues. Through this series of courses, students will gain an in-depth understanding of various security vulnerabilities and their prevention methods, laying a solid foundation for future smart contract development and security audits.

本课程旨在全面介绍智能合约安全的关键概念和技术。课程内容涵盖重入攻击、访问控制、闪电贷攻击、DOS攻击、交易抢跑、重放攻击、预言机使用问题、ERC20常见攻击、NFT常见攻击以及其他智能合约安全问题。通过这一系列课程，学员们将深入理解各种安全漏洞及其防范方法，为未来的智能合约开发和安全审计打下坚实基础。

本课程全面介绍了以太坊平台及其应用原理，涵盖从基本概念到核心技术特性如账户模型、交易机制等。通过本课程，学习者能深入理解以太坊的技术架构及其在区块链领域的应用。

This course provides a comprehensive introduction to the Ethereum platform and its technical principles, covering everything from basic concepts to core technological features such as the account model and transaction mechanism. Through this course, learners will gain an in-depth understanding of Ethereum's technical architecture and its applications in the blockchain domain.

Web3 Basics is the introductory course in this series. In this class, we’ll cover relevant concepts in the Web3 domain, application scenarios, and the technologies involved. This will give you a basic understanding of the entire ecosystem before diving into Web3 development.

Web3 基础知识课程是这一系列的入门课程。在本课中，我们将介绍 Web3 领域的相关概念、应用场景，以及使用到的技术。让学生在进行 web3 开发之前，对整个生态系统有一个基本的认识。

This is the introductory course for Mantle Network. In this lesson, we will dive into foundational concepts about the Mantle Network, including layer-2 (L2), optimistic roll-up (OR), and modular blockchain, providing students with a comprehensive understanding of the ecosystem before learning the Solidity syntax and building projects on Mantle.

Mantle Network 基础概念是这一系列的入门课程。在本课中，我们将深入探讨 Mantle 网络的基本概念，包括二层网络（L2）、乐观卷叠（Optimistic Roll-up）和模块化区块链等，让学生在学习 Solidity 语法和基础知识、建设项目之前对整个生态系统有一个全面的了解。