Yes, in 'echo 3 true story', 'echo 3' is likely related to the 'true story'. It could be the name or identifier for the events that make up the true story.
The Arctic down jacket was a type of down jacket that had a strong ability to keep warm. Among them, the Arctic down jacket was a brand under the Shanghai Saiyang Group. It was born in 1998 and quickly occupied the market with advanced scientific and technological concepts and excellent quality. Arctic down jackets were widely recognized for their warmth and mass consumption, becoming one of the important leading brands in the warmth industry in China. In addition, there were other brands such as Bosideng Extreme Cold and the Nepa Alaskan series, which were also Arctic down jacket brands with high warmth. Although some brands claimed to be Arctic down jackets, the warming effect could only reach the level of-20 degrees Celsius. In addition to the Arctic down jacket, there were other brands such as Reverse Arctic and Frost Heart that focused on the development of high-tech down jackets, making them lighter and easier to carry while keeping warm. In general, the Arctic down jacket was a type of down jacket that could withstand the cold and was suitable for wearing in cold environments.
There were a few novels similar to Echo of Unrequited Love that he could recommend. Among them were " Green Plum, You're Not Good "," The Days When I Fell in Love with a Tsundere Prince Charming "," Young Master Mu Is Paranoid "," Dressed as the Female Lead's arch-enemy "," Young Master Qin, I've fallen in love with you at first sight "," The All-rounded Movie Queen Spoils the Cute Husband "," This Brother Heard You Have a Secret Addict on Me ", and so on. These novels all involve the plot of the male protagonist secretly falling in love with the female protagonist. It might suit your interest.
It's hard to give a definite answer. Different comic universes and storylines handle the inclusion of Echo differently. You might want to check popular comic franchises or search online for more detailed information.
In most comic versions, Echo isn't deaf. However, there might be alternate or special story arcs where this could potentially be a trait, but it's not a common characteristic.
Sure, Echo is portrayed as deaf in the comics. This trait plays a role in shaping her personality and the challenges she faces throughout the comic series.