Ultimate Reality in Chinese / Japanese...

精眞 means pure truth or the apprehension of ultimate reality.

波羅末陀 is the Chinese and Japanese way to write the ancient Sanskrit word Paramārtha or परमार्थ which now means the highest truth, ultimate truth, ultimate reality, or fundamental meaning.

Paramārtha is the name of a famous Buddhist monk born in 499 CE. Paramārtha traveled the world (including Cambodia and territories that are now part of China) to spread the teachings of Buddhism by translating scriptures into the local languages so the truth could be understood by the masses.

So, we should all want to be a Paramārtha who brings the ultimate truth, knowledge, and enlightenment to others.

眞覺 means true and complete enlightenment.

This can refer to the perfect nirvana of the Buddha or the perception of ultimate truth or true awareness of all things (reality and unreality).

大乘無上法 means the supreme Mahāyāna truth.

This refers to the ultimate reality in contrast with the temporary and apparent. Other translations include “the reliance on the power of the vow of the bodhisattva” or “the peerless great vehicle teaching.”

Note: This may suggest that Mahayana Buddhism, as practiced in China, Japan, Korea, Vietnam, and other regions is superior (with subtle arrogance) to the original Theravada (or old school) Buddhism. Mahayana and Theravada Buddhists generally get along better than Catholics and Protestants, but there have been schisms.

These Japanese Kanji, 安心立命, can be translated as “religious enlightenment” or “spiritual peace gained through faith.”

Other dictionaries define as “spiritual peace and enlightenment” or “keeping an unperturbed mind through faith.”

My Buddhist dictionary defines it as “spiritual peace and realization of enlightenment.”

In the Zen school, this is about settling one's body and life; attaining complete peace, and establishing one's course of life in accord with the ultimate reality.

虚実 is a Japanese word that means “falsehood [and] truth” or “fiction [and] fact.”

This concept is used in warfare, gameplay, and martial arts strategies. 虚実 can be a strategy of real and/or deceptive moves. This gets to some Sun Tzu Art of War stuff where in warfare a strategic move is either a real and serious move or it is a deceptive blow.

Let's explore each character in more depth:

虚 was originally written 虛 (there is a very subtle difference in the strokes at the bottom of the character) and means unpreparedness, falsehood, emptiness, void, abstract theory, empty or unoccupied, diffident or timid, false, humble or modest, virtual, or in vain.
In the Buddhist context, 虛 represents the Pali/Sanskrit word “śūnya,” meaning empty, vacant, unreal, unsubstantial, untrue, space, humble, or in vain.
In ancient Eastern/Chinese astronomy, 虛 represents the “Emptiness” constellation (one of the 28 mansions in the sky).

実 was originally 實 in Chinese (they currently write it as 实 in Simplified Chinese) with the meaning, truth, reality, sincerity, honesty, fidelity, and substance.
The Buddhist context is similar, adding real, true, honest, really, solid, definitely, sincere, solid, fixed, full, to fill, fruit, kernel, verily, in fact, the supreme fact, or ultimate reality to the definition.