It is reported to be 3 layers. Prevent energy drains. In hot Singapore. Recommend 2 layers.
Do not do even little sins like masturbation & pornography to become a true Gentleman.
Well-versed & follow Holy Bible all the time.
After You Gentleman leave. That Company/Person/Place/Situation/Thing has to be better than before.
Gentleman should try best not to make Children/Females cry.
Do not take advantages of other people. Unless that person is a ruthless enemy. But give him chances first. Sometimes need to kill one to save many.
Do not touch females (must courtship & marry), males (best is everyone. Because 20th century. The males can be bisexuals, gays, transgenders, ...), self also (include masturbation & pornography).
Tips good service. Pay good products. At fair prices.
Do not take bribery money. Do not pick up ground money.
Open door for Lady. Stand up whenever a Lady leave the table.
Ultimate Objective of Gentleman Cultivation is to marry a Victorian Lady to have godly offsprings Children.
If another Gentleman is courting Her. Respect the Courtship Ownership. Because it is not easy to court a Lady. Unless the Lady tells You formally She does not want that Gentleman to You. Those females who are interested in many Males are not worth the time.
Virgin until Marriage.
Dress as best as possible to show that You can take up more Responsiblities.