Two letters were mailed and postmarked February 1st 1988 and February 8th 1988 to McDonald's at 2 Northgate Park, Chattanooga, Tennessee. Both contained the word "attention" written on the envelope, with the first stating "attn. dan r." and the second likely the full name (hence why it is redacted). The February 1st 1988 correspondence had an accompanying hand- printed sheet of paper, likely beginning "dear Dan this is the Zodiac speaking", along with accompanying printed cutouts entitled "CHINESE ZODIAC", and beginning "The Chinese Zodiac..." and "Many Chinese believe..." The February 8th 1988 correspondence had a sheet of graph paper with the hand-printed beginning "This is the Zodiac (speaking)" and accompanying form entitled "McDonald's Profile Change Notice", upon which was the hand-written message "This is shit..."
Q4 Envelope postmarked "CHATTANOOGA, TN 374 PM 1 FEB 1988" bearing the printed address "McDONALDS 2 NORTHGATE PARK CHATTANOOGA TENN. 37343 attn. dan r."
Q1 Envelope postmarked "CHATT_NOOGA, TN 374 PM 8 FEB 1988" bearing the printed address "McDonald's 2 NORTh Gate Park CHattanooga Tenn. 37343 Attention (redacted)".
ALSO SUBMITTED: McDonald's form entitled "FILET-O-FISH/CHICKEN McNUGGETS/PIES Station Observation Checklist G7/G8/G9".
In 1988, according to the Chinese zodiac, it was the Year of the Earth Dragon, spanning from February 17, 1988, to February 5, 1989.

Amendment: In 2025 DNA King from the Discord Forum informed me that "In 1988, McDonald's regional office was located in suite 401 in the Greenleaf Building, located at 2 Northgate Park in Chattanooga". Now, with access to a newspaper archive not available to me when this article was originally written, I found numerous advertisements regarding McDonald's at this address (see image on left). The confusion was created by looking for a fast food location rather than an office building.

"According to public records DAN PAGE B is connected with one company - Greenleaf Center, Inc./North Georgia . This person is appointed in Greenleaf Center, Inc./North Georgia as a CEO. This company was incorporated about thirty-seven years, ago in October of 1982 in Chattanooga. The company is listed as Withdrawn in Georgia companies records". The address listed here is 2 Northgate Park, Chattanooga, Tennessee.
Greenleaf Center, Inc./North Georgia is a Georgia Foreign Profit Corporation filed on October 14, 1982. The company's filing status is listed as Withdrawn and its File Number is J251556. The Registered Agent on file for this company is R. Lindsay Shuff and is located at 500 Greenleaf Circle, Ft Oglethorpe, GA 30742. The company's principal address is 1 Northgate Park Ste 201, Chattanooga, TN 37415-6912. The company has 3 principals on record. The principals are Dianna Gilbert from Chattanooga TN, Page B, Dan from Chattanooga TN, and Lindsay R. Shuff from Chattanooga TN. link
The February 1st 1988 envelope admittedly states "attn. dan r.", but with the dates and address matching, one can only assume that the sender got the middle initial incorrect (unless you know better in comments). We have these communications and the March 8th 1981 "Peachtree" Letter, with a loose Georgia connection, separated by 119 miles.
It is now your job to make the connection between between McDonald's, China and the addressee in question - assuming we have the right person.