At 7 a.m., the morning sun casts a golden leaf light over the Sycamore lane in Central Park. The crowd of dog walkers congregate into a flowing landscape, and various pet collars reflect the life philosophy of different owners – this circular square with a diameter of 38cm witnessed the fashion show of more than 200 pet dogs every day.

Chapter One: Tactical equipment and technological revolution
When Mark, an army veteran, showed up with his German shepherd, Thunder, the six metal clasps on the collar of the black tactical dog clanked. The Tactical Dog Collar, made of 1050D Cordura nylon, sold a record 300 units in a single day at last year's outdoor fair. The reflective strip on the side ensures a 200-meter visibility at night. It can withstand 500 pounds. The last time Thunder chased a squirrel…" Before Mark could finish speaking, a Smart alarm sounded – the collar's built-in GPS location indicated that the dog's heart rate was abnormal, which is the charm of the Smart Pet Collars market, which is growing 67 percent a year.

Chapter Two: The dialogue between lace and sterling silver
The poodle at the corner, Pearl, made of French Chantilly Lace, has a Pet Lace Collar with 32 stitches per inch stitched by hand and 24-karat gold-plated bells. Its owner, Emma, runs a high-end Pet salon, and statistics show that 82% of Luxury Pet Collar consumers also buy a custom label. At the moment, the sterling silver pet collar tags on the Pearl's collar are engraved with French psalms and the 24-hour butler's telephone number.

Chapter Three: The secret of the custom workshop
At the Paw Print Workshop at the end of Fifth Avenue, a 3D printer is making the 47th Custom Dog Collar of the month. Owner Kobayashi showed us the parameters: "Customers can choose between 1-5cm width, 72 pantone colors, and even embed hair DNA chips." The walls display curved anti-edge designs for Corgie and widening pressure relief designs for bulldogs; each product is equipped with UL certified traction straps — the nesses nesses show that dogs experience a 58% reduction in explosive behavior for customers using the professional Pet Collars Leashes Harnesses combination.

Chapter Four: The Carnival of Hidden markets
Just when we thought we'd seen the full range of pet gear, steampunk gear collars and mood-monitoring biosensing collars are making waves in Brooklyn's underground pet market. 38% of the Other Pet Collars, Leashes & Harnesses here are made of recycled materials, such as one explosive traction belt made of recycled fiber from six plastic bottles, but still maintains a tensile strength of 23kg.

Epilogue: The social slice in the collar
At dusk, the old man on a park bench gently petted his golden retriever, the frayed leather Collar Pet bearing witness to twelve years of companionship. In a nearby skyscraper, a tech upstart is checking daily exercise data from a smart collar on his mobile phone. According to statistics, the average North American family buys 3.2 collars per pet, and this $9.4 billion market is using rings of different materials to circle the softest human emotions.

When the moonlight illuminates the window of the Pet store, the Pet Collars Luxury series on display begins to circulate neon lights, as if to say: each collar is a love letter written by the owner to the pet, and the length of the leash measures the intimate and free distance between people and animals.