1. BlackRock and HSBC Funds Slash Byjus' Valuation to Zero:
- Leading global investment firms, including BlackRock and HSBC, have drastically reduced the valuation of Indian edtech startup Byjus to zero.
- This significant devaluation reflects the growing concerns and uncertainty surrounding the future of Byjus, which was once one of the most valuable startups in India.

2. Challenges Facing Byjus and the Edtech Sector in India:
- The article highlights the various challenges faced by Byjus, including a slowdown in growth, rising costs, and regulatory scrutiny.
- The broader edtech sector in India has also been impacted by the post-pandemic normalization of education, leading to a decline in demand for online learning platforms.

3. Founder Byju Raveendran's Response and the Company's Restructuring Efforts:
- Byju Raveendran, the founder of Byjus, has acknowledged the company's struggles and is reportedly working on a restructuring plan to address the challenges.
- The article suggests that Byjus is aiming to cut costs, streamline operations, and focus on profitability in an effort to regain investor confidence and secure its long-term sustainability.