--- title: "Luhui Dev (@luhui) | Hashnode" description: "Luhui Dev (@luhui) writes on Hashnode. Read their latest articles and follow their work." url: "https://hashnode.com/@luhui" --- @luhui # Luhui Dev @luhui · Hangzhou · Joined March 2026 ### [Rethinking Education in the AI Era: Five Directions](https://luhui.hashnode.dev/rethinking-education-in-the-ai-era-five-directions?utm_source=hashnode&utm_medium=feed) 🙋 I’m Luhui Dev, a developer who has been breaking down Agent engineering and exploring how AI can be applied in education. I focus on Agent Harness, LLM application engineering, AI for Math, and the 9 min read · [luhui.hashnode.dev](https://luhui.hashnode.dev/rethinking-education-in-the-ai-era-five-directions?utm_source=hashnode&utm_medium=feed) [2d ago](https://hashnode.com/posts/rethinking-education-in-the-ai-era-five-directions/6af55a9427efb94c921cca25) ### [Why Is AI Advancing So Rapidly in Mathematics?](https://luhui.hashnode.dev/why-is-ai-advancing-so-rapidly-in-mathematics?utm_source=hashnode&utm_medium=feed) 🙋 I’m Luhui Dev, a developer who has been breaking down Agent engineering and exploring how AI can be applied in education. I focus on Agent Harness, LLM application engineering, AI for Math, and the 8 min read · [luhui.hashnode.dev](https://luhui.hashnode.dev/why-is-ai-advancing-so-rapidly-in-mathematics?utm_source=hashnode&utm_medium=feed) [Nov 3](https://hashnode.com/posts/why-is-ai-advancing-so-rapidly-in-mathematics/6ae9b603ff773ff18c87c68a) ### [An Engineering Guide to LLM Token and Cost Optimization](https://luhui.hashnode.dev/an-engineering-guide-to-llm-token-and-cost-optimization?utm_source=hashnode&utm_medium=feed) For application and platform engineers, and for teams using AI coding tools. Saving tokens is not mainly about shortening prompts. It is about making the model do less useless work. Repeated reads, ir 8 min read · [luhui.hashnode.dev](https://luhui.hashnode.dev/an-engineering-guide-to-llm-token-and-cost-optimization?utm_source=hashnode&utm_medium=feed) [Sep 18](https://hashnode.com/posts/an-engineering-guide-to-llm-token-and-cost-optimization/6aad5cc40c1e5a8ebaaff851) ### [The Bumps and Bruises of Building Multi-Agent Systems](https://luhui.hashnode.dev/the-bumps-and-bruises-of-building-multi-agent-systems?utm_source=hashnode&utm_medium=feed) 🙋‍ I’m Luhui Dev, a developer who has been breaking down Agent engineering and exploring how AI can be applied in education. I focus on Agent Harness, LLM application engineering, AI for Math, and th 9 min read · [luhui.hashnode.dev](https://luhui.hashnode.dev/the-bumps-and-bruises-of-building-multi-agent-systems?utm_source=hashnode&utm_medium=feed) [Sep 4](https://hashnode.com/posts/the-bumps-and-bruises-of-building-multi-agent-systems/6a9aa57f3697dca574035952) ### [A Personal Skill Map for the AI Era: Building a Complete Loop in 2026](https://luhui.hashnode.dev/a-personal-skill-map-for-the-ai-era-building-a-complete-loop-in-2026?utm_source=hashnode&utm_medium=feed) 🙋‍ I’m Luhui Dev, a developer who has been breaking down Agent engineering and exploring how AI can be applied in education. I focus on Agent Harness, LLM application engineering, AI for Math, and th 9 min read · [luhui.hashnode.dev](https://luhui.hashnode.dev/a-personal-skill-map-for-the-ai-era-building-a-complete-loop-in-2026?utm_source=hashnode&utm_medium=feed) [Aug 28](https://hashnode.com/posts/a-personal-skill-map-for-the-ai-era-building-a-complete-loop-in-2026/6a9134373bd56a32fb535c00)