Returning from the Sea: I Rely on Modern Technology to Shock the Court

Lin Shen, a marine geologist, drifted in a shipwreck for three years. After a narrow escape, he traveled back in time to the Shaoxing period of the Southern Song Dynasty. He was as tattered as a "savage on the sea", but when he opened his mouth, he used charcoal to draw an accurate map of the East China Sea currents and predicted a storm within three days. He was suspected of being a "spy" and was executed. At the critical juncture, he exposed the fatal flaw of the Southern Song Dynasty's sea ships, demonstrated in public the method of distilling seawater to obtain fresh water, and even bluntly said that the monsoon pattern could subvert water transportation. He was so shocked that Zhang Jun was sent to Beijing in a hurry. In the court, conservatives criticized him for "deceiving the public" with his "monstrous words" and limited the results to three months. However, the waterproof notebook he carried with him contained the core drawings of the triangular sail and the sextant - should he rely on modern technology to solve the water transportation dilemma and suppress pirates to establish his power, or would he be framed by political opponents and die? Could this "advanced" scientist set off a marine revolution in the Southern Song Dynasty?