This repository hosts the official resources for a survey paper titled ‘Towards Reasoning Era: A Survey of Long Chain-of-Thought for Reasoning Large Language Models.’ It aggregates and organizes research on extended chain-of-thought reasoning techniques, including test-time compute scaling, reinforcement learning approaches like those in DeepSeek-R1 and OpenAI o1/o3, and system-2 reasoning paradigms. The collection serves as a reference hub for researchers studying reasoning capabilities in modern LLMs.