After Changing My Soul, the Tang Dynasty Imperial Master Helped Me Take the First Place in the Exam

An unexpected soul exchange between a Tang Dynasty imperial teacher and a modern school beauty! He put on his school uniform and saluted, used calculations to solve math problems, and stirred up chaos in the campus; she put on her court uniform to worship the heaven, used her physics knowledge to challenge the Tibetan envoys, and survived in the palace to the extreme. They have a cross-life call every day, but they don't know that there is a shocking conspiracy behind the exchange. Can the two break the situation and return to their positions?