The Chinese express words of congratulations publicly when occasions
arise. They include "weddings", "opening of business", "election to
offices", etc.
These sayings could be advertised in newspapers, or they could be
written on scrolls, plaques and greeting cards. They could be
displayed permanently in premises such as offices, clinics,
restaurants, homes, etc.
Certain phrases and sayings are used more commonly than others,
depending on occasions. These sayings are often seen on plaques in
businesses, homes, etc.
Traditional characters, rather than simplified ones, are normally
used. A variety of type fonts are used for the following writings.
Note that it is extremely difficult to provide precise and “true to
the spirit” translations.
The following are examples of how congratulations are expressed,
depending on the occasion.
Weddings:

Loving and living together for a hundred years

Two loving hearts resonating on each other
Appointment to
office:
Bringing prosperity to the people

For the country, for the people
Business:

Thriving and flourishing business

Business flourishing by the day
Birthday for
the elderly:
(These two are commonly expressed together)

Live as long as the Mountain in the South

Blessed as the Oceans of the East