There are two types of crowns: push-pull crown and spiral crown.
When adjusting: use your thumb and index finger on either hand to gently grip the crown and pull it out of its position (avoid using a single finger to pick the crown out of its position as this will easily cause uneven force and lead to deformation of the movement). Also use the thumb and index finger to gently grip the crown and rotate (avoid using a single finger to rotate the crown as this will cause uneven force and lead to deformation of the movement).

Before adjusting a mechanical watch, you must fully wind it up manually (turn the crown in an upward direction to wind) and then adjust the time. This is done to avoid insufficient power to operate and in turn affect the time kept.
When adjusting, turn the crown in a clockwise direction. If you wind past your desired time, continue to wind in a clockwise direction. Avoid winding in the opposite direction as this may damage to the watch.
When adjusting the time on a two-hand quartz watch, set the time one minute ahead of the desired time because the hands will not start running immediately after adjustment.
Before using a multi-function chronograph to keep time, the crown must be returned completely to its original home position, while all the hands must be in the zero position.
The operation sequence of using a multi-function chronograph for timekeeping must be: Start → Stop → Reset (this order must be followed).
When adjusting the time on a watch with a moon phase, day of the week, or calendar day indicator, adjust the moon phase, day of the week, or calendar day, to one day before your desired date, then adjust the hour hand to move the moon phase, day of the week and calendar day. This can avoid mixing up day and night by directly adjusting the date.
When adjusting the moon phase function, first adjust the moon phase to full moon (i.e. the 15th day of a lunar month), and then calculate the number of days your required date is past the 15th in a lunar month, then adjust the moon phase to one day ahead of your required date. Next, turn the hour hand to drive the moon phase. This can ensure the accuracy of the moon phase adjustment.
The operation sequence of these functions on a watch that displays the day of the week and the date is: day of the week → date → time.
The operation sequence of these functions on a watch that displays the moon phase, the day of the week and the date is: moon phase → day of the week → date → time.
The operation sequence of these functions on a watch that displays the month, the day of the week and the date is: month → day of the week → date → time.

Adjusting the moon phase, day of the week and date: Do not adjust the date from 9 pm to 4 am, because during this period the date will be turning and the gears will be relatively less in tune. Adjusting the date quickly during this period will result in damaged parts, affecting usage. Because of different gearing, the calendar gear is divided into two types by speed, with one type completing a date change in ± 5 minutes and the other in ± 4 hours.
If your watch shows the day of the week, adjust the day of the week and date on the first day of months with 31 days (January, March, May, July, August, October and December) to avoid errors in the date display.
After each adjustment, the crown must be the pressed back to its original position. If the crown is spiral by design, loosen it by turning it in an anti-clockwise direction. Do not pull with force. After adjustment, you must press the crown back into position and then tighten it by turning it in a clockwise direction to keep out water and dust.
Do no adjust or use any function underwater.