Why You Should Drink Green Tea Every Day?

Hitting Emotional Rock Bottom, Breaking Out of Burnout: Gen Z Head to the Mountains and the Sea to Cool Down Life

Inside the production facility, the steady rhythm of high-speed manufacturing lines fills the air as hundreds of thousands of promotional codes are generated and printed every hour.

Standing before the central control dashboard, Hung, the Plant Production Manager, monitors the operation as endless streams of unique codes are created at a pace impossible for any individual to follow—not even the engineers responsible for operating the system.

Each lucky draw code under the label of Number 1 Energy Drink, Dr. Thanh Tea, and Zero Degree Green Tea bottles consists of 9 randomly generated characters, representing a unique and independent opportunity within the system.

As the person overseeing the entire factory, Hung is not concerned with individual codes. Instead, he focuses on the integrity of the entire system.

“The number of codes isn't what matters most,” he explained. "The key principle is that no one can know the outcome of any code before it reaches consumers."

The code generation and printing system operates automatically within a completely enclosed production line. Every code is produced using a secure randomization algorithm under strict security protocols and multiple layers of quality control.

“Our responsibility isn't deciding who wins. It's making sure nobody can influence the results. When the system functions correctly, every outcome must remain entirely beyond human control,” Hung said.

Why Can't Anyone Predict a Winning Code?

Each promotional entry code in the “Scratch & Win Instantly” campaign contains nine characters, combining letters, numbers and special symbols.

For many people, entering the code after each refreshment with Number 1 Energy Drink, Dr. Thanh Tea, or Zero Degree Green Tea has become a habit this summer.

The system generates each code automatically from hundreds of millions of possible combinations, with no predictable pattern, sequence or repetition.

“There is simply no way to guess the next code because every code is generated independently,” Hung explained.

"Our system is built around two essential principles: true randomness and absolute uniqueness."

Even after generating hundreds of millions of promotional codes throughout the campaign, the system guarantees that every code is unique, with zero duplication.

Once generated, the codes are printed directly onto bottle labels before being automatically applied to bottles on a fully enclosed production line. Finished products are then distributed randomly across the market.

There are no manual operations, no intermediary handling, and no opportunity for human interference.

“There are no human fingerprints anywhere in this process,” Hung emphasized.

By the time a consumer purchases a bottle, the prize associated with its code has already been securely stored in the system. Entering the code simply verifies the pre-generated result.

Everyday Refreshment, Everyday Opportunities

After leaving the factory, bottles of Không Độ Green Tea, Dr Thanh Herbal Tea, and Number 1 Energy Drink reach millions of consumers throughout Vietnam—from busy city streets and neighborhood convenience stores to restaurants, highway rest stops, factories and construction sites.

For most people, they're simply part of daily life—helping quench thirst, recharge energy, relieve stress, cool down in Vietnam's summer heat, or refresh the body after a long day.

The winning code will be automatically credited to the participating phone number within 24 hours.

But beneath every bottle label lies another possibility: a chance to win.

Vu Duc, 29, a factory worker in Dong Nai Province, has participated in the promotion for several years.

“Every summer, drinking Number 1 Energy Drink and scratching the label has become part of my daily routine,” he said.

"Factory work means constant production deadlines, so I usually drink Number 1 for an energy boost. While I'm drinking it, I scratch the label, enter the code and join the promotion. This year I've participated five or six times already. The latest time I won a VND50,000 (about US$2) mobile phone top-up. I was genuinely excited because the prize was real—and I found out instantly instead of waiting."

Vu isn't alone.

Tran Khanh, 27, from Ho Chi Minh City, once believed winning promotional prizes was extremely unlikely.

But after cooling down with a bottle of Dr Thanh Herbal Tea during Vietnam's intense summer heat, scratching the label and discovering he had actually won, his perspective changed completely.

A New Winner Every Few Minutes

More than 500,000 prizes have been allocated throughout the campaign.

Every day, thousands of winning codes are confirmed, meaning that someone wins a prize every few minutes.

Winners come from every walk of life—from office workers and university students to factory workers enjoying Không Độ Green Tea to relax, Number 1 Energy Drink for an energy boost, or Dr Thanh Herbal Tea to stay refreshed during hot weather.

Some consumers participate many times before winning.

Others strike lucky on their very first attempt.

The US$3,800 Grand Prize: When Luck Calls Your Name

Beyond instant prizes such as mobile phone top-ups, participants also have the opportunity to win the campaign's Grand Prize of VND100 million (approximately US$3,800) and a First Prize of VND10 million (approximately US$380) through periodic lucky draws.

Every valid code submitted during the month is automatically entered into a computerized random drawing, ensuring that every eligible entry—and every participant—has exactly the same chance of winning.

The Grand Prize lucky draws will be livestreamed on June 4, July 20 and September 4 via the official Facebook pages of Dr Thanh Herbal Tea, Không Độ Green Tea, and Number 1 Energy Drink.

To reinforce public trust, each drawing is conducted in the presence of consumer representatives and watched live by hundreds of thousands of viewers across social media platforms.

As the electronic draw comes to a stop, attention shifts to a single moment.

Within seconds, one winning code is selected.

One lucky phone number is announced.

No one knows the outcome beforehand.

No participant enjoys any advantage.

That moment perfectly reflects the campaign's guiding principle:

Every result is determined entirely by chance. Every participant has an equal opportunity. Every winner is selected through a transparent, secure and fully automated system.

More Winners From Drinking Dr Thanh Tea After Than Do Thanh (Quang Nam) and teacher Ngo Chi Cong (Kien Giang), the “Tear off Dr Thanh Tea label and win x9 gifts” program has continued to identify 4 more second-prize winners this summer, each receiving a VND 9 million (US$365.78) prize for their refreshment and body detoxifying with Dr Thanh Tea.

Delivery Driver Receives Amazing Gifts from Dr. Thanh Tea Nguyen Van Trong, a 40-year-old man living in Binh Chanh District, Ho Chi Minh City, has won the first prize in the “Tear off Dr Thanh Tea label and win x9 gifts” program. His prize is a set of 9 home appliances worth VND46 million (US$1869.5), thanks to detoxifying his body with Dr Thanh Tea.

Young people share their summer detox habits Trà My, 28, living in Da Nang, chooses Dr. Thanh herbal tea to cool down during hot summer days or after sports sessions and stressful working hours.