Vedananupassana

“Pleasant feeling, Aggivessana, is impermanent. Painful feeling too is impermanent. Neutral feeling too is impermanent. Seeing thus, a well taught noble disciple becomes disenchanted with pleasant feeling, disenchanted with painful feeling, disenchanted with neutral feeling. Being disenchanted he becomes dispassionate. THROUGH DISPASSION HIS MIND IS LIBERATED. When it is liberated there comes the knowledge: “It is liberated”. He understands birth is destroyed, the holy life has been lived, what had to be done has been done; there is no more coming to any state of being. He whose mind is liberated thus, Aggivessana, sides with none and disputes with none; he employs the speech currently used in the world without adhering to it.” - Dighanaka Sutta.


Like-feeling relates with chanda or desires.
A monk ceases it by just watching, and enjoy it without owning it, and objects that causing the like-feelings will disappeared.

Dislike-feelings relates with tanha or craving.
A monk ceases it by stop all his proliferation, his tendency to reside in objects he liked so when he doesn;t find it, he feel dukkha or discomfortness.
Its true that by contious practice of waching like-feeling it will not give a station for the disliking, but he still have residue of past mind conditioning. this is why, he also must watch his dislike-feeling.

Neutral feelings relate with upadana or attachment.
Even neutral feelings must be watched cause pure feelings exist because there is attachment to certain objects.
Someone who compose songs, who is good in other kind of arts are type of people who don;t watch his neutral feelings. They still attached to objects, and they depict it.
This is why upasaka and monks work together. Upasaka as the one who still attached to feelings will create statues. And monks use it to respect the Buddha. All become a team in peaceful buddhist countries.
To remove neutral feeling, a monk must cease his obsession, so he can become emotionless. Obsession that born after perception experience is the cause of feelings in first place, before later develops like and dislike because of the perfection of human body.