"Ascending from Third Grade Peak to Fourth Grade requires starting the tempering of the five viscera: heart, liver, spleen, lungs, and kidneys. The liver is associated with wood, the heart with fire, the spleen with earth, the lungs with metal, and the kidneys with water. The five elements correspond to the five viscera, requiring the use of Qi and blood to build five bridges, connecting them into a whole."
"Building a single bridge of Qi and blood is the Fourth Grade Initial Rank, and completing all five bridges is the Fourth Grade Middle Rank."
"If the foundation is insufficient previously, causing the Qi and blood limit to be inadequate when ascending from Third Grade to Fourth Grade, you can only build bridges slowly, progressing from the Fourth Grade Initial Rank in cultivation."
"However, if the foundation is robust, you can build all five bridges of Qi and blood in one go, skip the Initial Rank, and start cultivation directly from the Middle Rank."
