Recommended Words
Although I still can’t understand electrocardiograms, I can roughly understand the history of technology and myocardial evolution.
Original Links
History of Electrocardiogram Development 心电图背后的疯狂科学史_哔哩哔哩_bilibili
Heart and Blood (Part 2): The Way of Natural Selection Lies in the Heart 【鬼谷说】心脏与血液（其二）：天演之道 存乎一心_哔哩哔哩_bilibili
Heart and Blood (Part 1): The Way of Natural Selection Is Ever-changing 【鬼谷说】 心脏与血液（其一）：天演之道 变化万千_哔哩哔哩_bilibili