The term "tuiqiao" (deliberating and weighing) originates from an anecdote about the Tang dynasty poet Jiadao composing poetry; it originally described Jiadao's manner of thinking and state of diligent effort when selecting words and phrases while composing poems. In order to find the appropriate words, the poet continuously searched for terms in his mind to convey the artistic conception the poem was meant to express, with his body and hands simultaneously gesturing in deliberation. At first, the mind consciousness deliberated and examined (vitarka-vicāra), gradually transitioning to the manas's deliberation and examination. The manas's deliberation and examination is extremely subtle and concealed, so much so that the mind consciousness seems motionless and without thought—just like investigating Chan.
When Jiadao was pondering and weighing his words and phrases, what mental factors (caittas) arose? There were the five universally present mental factors, the five object-specific mental factors, and perhaps also the wholesome mental factors and the afflictive mental factors. When deliberating, one must first raise the mental factor of attention (manaskāra) directed toward the object being deliberated, drawing the mind onto the object to be deliberated; the mental factor of contact (sparśa) appears, the mind contacting the object of deliberation; the mental factor of feeling (vedanā) appears, receiving and accepting the object of deliberation; the mental factor of perception (saṃjñā) arises, recognizing and grasping the object being deliberated; the mental factor of volition (cetanā) appears, continuously deliberating (manasikāra) on this object until finally working it through and determining it, then proceeding to subsequent actions.
When gesturing with the hands the motions of pushing and knocking, the five universally present mental factors of the five sense consciousnesses and the consciousness accompanied by the five senses (pañca-sahagata-mano-vijñāna) also appear. During attention, the mind is relatively concentrated; the mind consciousness and manas are focused on the corresponding object, so the appearance of the mental factor of feeling may be less frequent than at other times, as the mind is occupied with the problem being pondered. In the process of deliberation, if one happens upon images to which the manas is particularly sensitive, the mental factor of feeling may arise; this feeling is an inner stirring and sensation of the mind, not a feeling caused by changes in the external six sense objects. The mental factor of feeling originally means to receive, accept, and take in; because if the problem is not taken in and accepted, one cannot continue thinking about it, and thus cannot deliberate, cannot arrive at the final result of deliberation, cannot make a decision and engage in subsequent actions, and even less can wisdom arise.
Throughout the processes of perception and volition, the mental factor of meditative concentration (samādhi) is always present in accompaniment. There is also the mental factor of determination (adhimokṣa); determination should mean having correctly understood the general meaning of the object—that is, grasping the gist—being able to derive a relatively reasonable answer, view, notion, or conclusion regarding the object under consideration. During the process of deliberation, the mental factors of desire (chanda), mindfulness (smṛti), and meditative concentration (samādhi) also appear: the mental factor of desire is the wish to deliberate, driving the sixth and seventh consciousnesses to deliberate, to select words and compose phrases; after determination, mindfulness of the meaning of the words is formed; and focusing on the deliberation is the merit of the mental factor of meditative concentration.
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