Being chinese means

as you can see from the WeGene plot, you have about 40% ancestry that could be traced back to populations in south China, such as southern Han Chinese,Dai and She. We would suspect that your father is probably a southern native.
 
I find the name "Cheng Heng Pang" in University of Nottingham Ningbo China: 
http://www.nottingham.edu.cn/en/science-engineering/departments/chemical-environmental/people/people.aspx
 
https://www.researchgate.net/profile/Cheng_Heng_Pang

This is a good mixed gene sample from Europe and China. Your father's DNA and origin of Macau all show his southern Chinese background. The first thing you need to know is to find the "Chinese identification card number" (中国身份证号码）of your father if he had one before he left China. You might track this from the local public security bureau in China where your father's passport was issued. However, Macau was a Portugal colony before 1999 and your father's infomation might not in the Chinese census system. By the way, as your mentioned your father's name is "Cheng Heng Pang", it is in high possibility that his family name is "Cheng"(程 or 成) rather than "Pang". (Chinese put family name first and given name last to show the respect for the ancestors). Good luck!

@chengang 微基因的分析工具或算法更新了？能把我的结果重新算一下吗？：）

There should be many ways to find your father if he is still registered with his previous name in Macau. Good luck. 

这菇凉的基因是南南合作结晶？南中国和南欧？