List of tallest buildings in China
Timeline of tallest buildings

Name
Floors
Year(s) as tallest
Height m
City
Image
Union Building
6
1916-1922
-
Shanghai
-
Nanfang Building
12
1922-1927
-
Guangzhou
Nan Fang Building.JPG
Customs House
8
1927-1929
-
Shanghai
-
Peace Hotel
13
1929-1934
77
Shanghai
Sasson House The Bund.JPG
Broadway Mansions
19
1934-1934
78
Shanghai
Shanghai Mansion.JPG
Park Hotel
24
1934-1968
84
Shanghai
-
Guangzhou Hotel
27
1968-1976
-
Guangzhou
-
Baiyun Hotel
34
1976-1985
-
Guangzhou
-
Guomao Building
50
1985-1990
160
Shenzhen
-
Jing Guang Center
52
1990-1996
208
Beijing
-
King Tower
38
1996-1996
212
Shanghai
-
Shun Hing Square
69
1996-1997
384
Shenzhen
-
CITIC Plaza
80
1997-1998
390
Guangzhou
-
Jinmao Tower
88
1998-2008
421
Shanghai
-
Shanghai World Financial Center
101
2008-2015
492
Shanghai
-
Shanghai Tower
128
2015-present
632
Shanghai
-

Question: What were the tallest buildings in China between 1968 and 1990?
Answer: Standing tall with 34 floors, Baiyun Hotel surpassed Guangzhou Hotel, to be the tallest building in China in 1976 and remained so until 1985, when it was surpassed by Guomao Building in Shenzhen.