Question:
Tu Youyou (Chinese: Tu You You ; pinyin: Tu Youyou; born 30 December 1930) is a Chinese pharmaceutical chemist and educator. She is best known for discovering artemisinin (also known as qinghaosu) and dihydroartemisinin, used to treat malaria, which has saved millions of lives.
Tu Youyou carried on her work in the 1960s and 70s during China's Cultural Revolution, when scientists were denigrated as one of the nine black categories in society according to Maoist theory (or possibly that of the Gang of Four). In 1967, during the Vietnam War, Ho Chi Minh, the leader of North Vietnam, which was at war against South Vietnam and the United States, asked Chinese Premier Zhou Enlai for help in developing a malaria treatment for his soldiers trooping down the Ho Chi Minh trail, where a majority came down with a form of malaria which is resistant to chloroquine. Because malaria was also a major cause of death in China's southern provinces including Hainan, Yunnan, Guangxi, and Guangdong, Zhou Enlai convinced Mao Zedong to set up a secret drug discovery project, named Project 523 after its starting date, 23 May 1967. Upon joining the project unit, Tu was initially sent to Hainan where she studied patients who had been infected with the disease. During the time she spent there, her husband was banished to the countryside, meaning that her daughter had to be entrusted to a nursery in Beijing. Scientists worldwide had screened over 240,000 compounds without success. In 1969, Tu Youyou, then 39 years old, had an idea of screening Chinese herbs. She first investigated the Chinese medical classics in history, visiting practitioners of traditional Chinese medicine all over the country on her own. She gathered her findings in a notebook called A Collection of Single Practical Prescriptions for Anti-Malaria. Her notebook summarized 640 prescriptions. Her team also screened over 2,000 traditional Chinese recipes and made 380 herbal extracts, which were tested on mice. One compound was effective, sweet wormwood (Artemisia annua), which was used for "intermittent fevers," a hallmark of malaria. As Tu also presented at the project seminar, its preparation was described in a 1,600-year-old text, in a recipe titled, "Emergency Prescriptions Kept Up One's Sleeve". At first, it didn't work, because they extracted it with traditional boiling water. Tu Youyou discovered that a low-temperature extraction process could be used to isolate an effective antimalarial substance from the plant; Tu says she was influenced by a traditional Chinese herbal medicine source, The Handbook of Prescriptions for Emergency Treatments, written in 340 by Ge Hong, which states that this herb should be steeped in cold water. This book contained the useful reference to the herb: "A handful of qinghao immersed with two litres of water, wring out the juice and drink it all." After rereading the recipe, Tu realised the hot water had already damaged the active ingredient in the plant; therefore she proposed a method using low-temperature ether to extract the effective compound instead. The animal tests showed it was completely effective in mice and monkeys. Furthermore, Tu volunteered to be the first human subject. "As head of this research group, I had the responsibility" she said. It was safe, so she conducted successful clinical trials with human patients. Her work was published anonymously in 1977. In 1981, she presented the findings relating to artemisinin at a meeting with the World Health Organization.
Answer this question using a quote from the text above:

WHat did she observe?

Answer:
One compound was effective, sweet wormwood (Artemisia annua), which was used for "intermittent fevers," a hallmark of malaria.

Answer the question at the end by quoting:

Alvin and the Chipmunks, originally David Seville and the Chipmunks or simply The Chipmunks, is an American animated music group created by Ross Bagdasarian Sr. for a novelty record in 1958. The group consists of three singing animated anthropomorphic chipmunks: Alvin, the mischievous troublemaker, who quickly became the star of the group; Simon, the tall, bespectacled intellectual; and Theodore, the chubby, impressionable one. The trio is managed by their human adoptive father, David (Dave) Seville. In reality, "David Seville" was Bagdasarian's stage name, and the Chipmunks themselves are named after the executives of their original record label.
In addition to having an IQ just north of Einstein, Simon possesses a dry sense of humor as well as keen wit. He is kind, gentle, logical, and at times poetic. He often takes charge when Alvin goes too far with his harebrained schemes. Although Simon tends to disagree with Alvin and even argue with him, he truly loves his brother and sticks by him despite everything. He wears glasses and blue attire, and has blue eyes. Simon plays the bass, bass clarinet, saxophone, bagpipes, tuba, and drums, among others. In vocal harmonies, he consistently sings the lower parts due to having a deeper voice than his brothers. He is shown playing the keyboard in the original open for the 1980s series. He was also shown playing guitar in a 1980s Hardee's commercial. Simon is often implied to have a crush on Jeanette, as she is like him in many details; wearing glasses and blue and purple attire and having a high IQ, possibly rivalling his own. However, he seems braver in standing up to siblings than her because Jeanette doesn't often stand up for herself when Brittany pushes her around, but like Simon to Alvin, Jeanette shares a sisterly bond with Brittany. In one animated episode, a chemistry experiment gone wrong resulted in Simon becoming a handsome, Casanova-like romancer. He called himself "Mr. Heartthrob" (an obvious parody of Mr. Hyde), and enchanted every girl he met before being returned to normal. Like his brothers, he was originally voiced by Ross Bagdasarian Sr. In the animated series and film, he was voiced by Ross Bagdasarian Jr. Matthew Gray Gubler voiced Simon in the live-action/animated film series.

did they ever date?
He called himself "Mr. Heartthrob" (an obvious parody of Mr. Hyde), and enchanted every girl he met before being returned to normal.