You keep getting smacked over and over again for everyone to see.
Vietnamese are from Au Lac state. Zhao Tuo and his soldiers were from northern China and they founded Nan yue and crushed the Vietnamese Au Lac and then annexed it.
The majority of Cantonese Guangdong Han have Y chromosome haplogroup from northern China which they inherited from their fathers but native (baiyue) mtdna ehich they inherited from their mother.
How Han are Taiwanese Han? Genetic Inference of Plains Indigenous Ancestry ... - Shu-Juo Chen - Google Books
Cantonese language is a direct descendant of Old Chinese and preserves even more charactistics of it than Mandarin. Mandarin has changed more and lossed many consonant endings from old Chinese.
Arabic has many languages/dialects in different regions. They are all descended from Arabic spoke in the Arabian peninsula, after te Islamic conquests Arabs took over the entire northern africa (previously under control of Byzantines and other kingdoms), fertile cresent and Arabs settled as far as central asia. There are central asian arabs today who speak their own Central Asian arabic language and its different from other dialects.
If a Morrocan Arab speaks Morrocan Arabic (Darija) to an Gulf Arabic speaker it will be extremely difficult for them to understand each other.
Peace Corps Moroccan Arabic (Darija) Course- Free Arabic (Darija) Lessons Online
If a Morrocan Arab, or Egyptian Arab or Gulf Arab speaks to an Uzbeki Arabic speaker the languages are definitely mutually unintelligible. They will not understand each other and need a translator. Uzbeki Arabic has two dialects and speakers of them cannot even understand each other.
Influence of the Tajik language on the vocalism of Central Asian Arabic dialects - by Lian Slayford-Wei - Helium
Cantonese and Mandarin are both descended from Old Chinese and Middle Chinese. Han moved from northern China like Zhao Tuo to guangdong and they married Yue women and became Cantonese.
Spanish men moved to latin America and married native women and their hispanic descendants speak Spanish and not any native language.
In Taiwan, many Hokkien Taiwanese are descended from Hokkien men from Fujian marrying aboriginal women. They only speak hokkien and not aboriginal languages.
Are you going to share more idiocy with us?