Answer the question at the end by quoting:

Yen was born in Guangzhou, China. His mother, Bow-sim Mark, is a Fu Style Wudangquan (internal martial arts) and Tai Chi grandmaster, while his father, Klyster Yen (Zhen Yun Long ), is a newspaper editor. When he was two years old, his family moved to Hong Kong and then to Boston when he was 11. His younger sister, Chris Yen, is also a martial artist and actress, and appeared in the 2007 film Adventures of Johnny Tao: Rock Around the Dragon.
Donnie Yen was a rebel when he was young due to the huge expectations and pressures from his parents, as his mother is the founder of the Chinese Wushu Research Institute in Boston, and his father was a scholar and a musician. Yen joined a Chinatown gang in Boston, MA, in his early years. He was a very curious teenager who sought to exchange martial arts knowledge with people from different martial arts backgrounds, which led to him gaining profound knowledge in practical martial arts and having a reputation as a street brawler.  One reported occasion confirms Yen as being an efficient martial artist. According to news reports by Hong Kong news channels in the late 1990s, Yen was at a nightclub with his then girlfriend, Joey Meng. Inside the nightclub, Joey was harassed by a troublesome gang that had taken an interest in her. Yen warned them to leave her alone, but they persisted to cause trouble. As Yen and Joey left the club, the gang followed and attacked Yen. Yen beat up eight members of the gang who were later hospitalized.  Malaysian Martial Arts Star Michelle Yeoh has said that Donnie Yen is the fastest guy she has worked with. Other martial arts stars such as Jackie Chan and Jet Li have also stated that Yen may be the best fighter in terms of practical combat in the Asian cinematic universe.  World class fighters, such as former Strikeforce Middleweight Champion Cung Le and former World Boxing Heavyweight Champion Mike Tyson, who have worked with Donnie Yen in the films Bodyguards and Assassins and Ip Man 3, respectively, have both claimed that Donnie Yen is an incredible martial artist and would do well in authentic combat. While filming Ip Man 3, crew members were afraid that Mike Tyson, who had been a professional boxer, would forget the choreography and throw real punches to injure Yen. However, it was ultimately Yen who fractured Tyson's finger while using his elbow to block Tyson's punches.

Why did the gang follow them?

Inside the nightclub, Joey was harassed by a troublesome gang that had taken an interest in her.



Answer the question at the end by quoting:

Herb Jeffries (born Umberto Alexander Valentino; September 24, 1913 - May 25, 2014) was an African-American actor of film and television and popular music and jazz singer-songwriter, known of his baritone voice. He was of African descent and Hollywood's first singing black cowboy. In the 1940s and 1950s Jeffries recorded for a number of labels, including RCA Victor, Exclusive, Coral, Decca, Bethlehem, Columbia, Mercury and Trend. His album Jamaica, recorded by RKO, is a concept album of self-composed calypso songs.
From Detroit, at the urging of Louis Armstrong, Jeffries moved to Chicago where he performed in various clubs. One of his first gigs was in a club allegedly owned by Al Capone. Jeffries began his career working with Erskine Tate and his Vendome Orchestra. Tate signed the 19-year-old Jeffries to a contract with his Orchestra at the Savoy Ballroom in Chicago. His break came during the 1933 Chicago World's Fair A Century of Progress International Exposition singing with the Earl Hines Orchestra on Hines' national broadcasts live from the Grand Terrace Cafe. His first recordings were with Hines in 1934, including "Just to be in Carolina". By 1940, he was singing with the Duke Ellington Orchestra and then recorded with him from 1940 to 1942. His 1940 recording of "Flamingo" with Ellington, released in 1941, sold more than 14 million copies in its day. His name had been Herbert Jeffrey, but the credits on the record mistakenly called him Jeffries, so he renamed himself to match the typo. "Flamingo" was later covered by a white singer, the popular vocalist Tony Martin. During his time with the Duke Ellington Orchestra as a lead vocalist, Jeffries proved his talent as a mature singer, demonstrating his wide vocal range in such songs as "I Don't Know What Kind of Blues I've Got," "The Brownskin Gal," and "Jump for Joy" (all 1941). The 1944 single "My Little Brown Book" by Ellington and his Famous Orchestra, on which Jeffries provided vocals, reached No. 4 on Billboard R&B chart. Later on, Jeffries was replaced in the Ellington's band by Al Hibbler.  In his teens, Jeffries had developed a fine voice, initially singing in higher registers. He started out his singing career as a lyrical tenor, but, on the advice of Duke Ellington's longtime music arranger, Billy Strayhorn, he lowered his range to mimic the vocal stylings of crooner Bing Crosby. Jeffries became a "silken, lusty baritone," according to music critic Jonny Whiteside.  In 1945, Jeffries had a hit on the Billboard R&B chart with "Left A Good Deal In Mobile" (No. 2), on which he was accompanied by pianist Joe Liggins and his band Honeydrippers. Then, he moved to Europe and performed there for many years, including at nightclubs he owned. He was back in America by the 1950s, recording jazz records again, including 1957 collection of ballads, Say It Isn't So.  In 1995, at age 81, he recorded The Bronze Buckaroo (Rides Again), a Nashville album of songs on the Warner Western label.

Did he have any other hits?
His 1940 recording of "Flamingo" with Ellington, released in 1941, sold more than 14 million copies in its day.