Time and Him Are Just Right 时光与他，恰是正好 Episode 21

Lin Xi and Jun Xing rushed home after hearing the news. It turned out that Lu Chi secretly went to play football with his classmates because Aunt Wen didn't allow it. He sweated a lot and became dizzy. Fortunately, the doctor said that he just caught a cold. Lin Xi looked at Jun Xing worried, and said that he could come back to accompany Lu Chi more often when there were no classes. Jun Xing thought about whether there was a tool to monitor Lu Chi's physical condition at any time.

A year later, Lin Xi and Junxing saw the poster of the Entrepreneurship Competition. Lin Xi thought it was an opportunity to remind Junxing to try to make a heart detection tool. Jun Xing began to supplement the medical knowledge of the heart, took classes with Lin Xi, and even asked Teacher Wang questions after class. Knowing that the two wanted to make a heart detection bracelet, Mr. Wang recommended Professor Chen, an interdisciplinary expert, to them and told them the address.

The two found Professor Chen's home based on the address. Professor Chen thought that the two of them were just trying to enrich their resumes, and closed the door immediately before they finished speaking. Jun Xing was rejected several times and was very disappointed. Xie Ang reminded them to stalk them and communicate more with the professor. In the following period of time, the two came to Professor Chen's door many times to deliver breakfast, cactus, watermelon and other small gifts.

One day, the two came to the professor's door again, walked into the house through the open door, saw the professor sweeping the water, and they helped rescue the wet materials on the ground. Suddenly, the professor received a call and learned that he had to do an experiment. Jun Xing asked the professor to leave first, and he and Lin Xi packed things together.

In the evening, when Professor Chen returned home, he saw the manuscript drying and the two people who had fallen asleep. The professor woke them up, and the two planned to leave immediately, but the professor left them to eat together. At night, the professor asked Junxing why he made the bracelet, and Junxing told the professor that because of his younger brother's illness, he planned to make a medical-grade bracelet that could detect heart data 24 hours a day, and was ready for a long-term battle. The professor asked them to bring questions next time, and they were very happy.

At the professor's home, Professor Chen explained the relevant knowledge of the bracelet to the two of them day after day. One night, under Junxing's continuous improvement, the wristband can finally display the electrocardiogram, but it is still different from the display of the electrocardiogram detector. The professor asked the two to make the bracelet first, and then gradually upgrade it. It was night again, and Lin Xijunxing continued to improve the circuit design of the wristband in the classroom, and finally the first generation of the wristband was born. Lin Xi learned that Junxing needed experimental samples, so she grabbed a few people from the small team as the first batch of experimenters for the bracelet.

In the amusement park, Lin Xi asked several people to wear the improved wristbands to play the amusement facilities, and record the data after the entertainment activities. At the end of the game, Lin Xi said that the wristband will automatically alarm when the heartbeat exceeds 100 times per minute, and everyone is asked to wear the wristband to record 24 hours of data. Suddenly it rained heavily, and everyone bid farewell and left the playground. Yi Mian and Xie Ang ran to the bus stop to hide from the rain, Xie Ang ran to buy an umbrella. Suddenly a bus passed by, Qingyuan saw Yimian, got off the bus and handed her the umbrella, and left by himself in the rain. At this moment, Yimian's bracelet sounded an alarm, and Xie Ang was holding an umbrella and looking at her thoughtfully.

Yun Lang held an umbrella and sent Yue Yue to the front of the house. Yue Yue saw that Yun Lang was caring about Chen Mo again, and felt that Yun Lang didn't care about him, so he was very angry. Yue Yue couldn't help asking Yun Lang if he had ever liked her. Seeing Yun Lang's hesitation, she expressed that she wanted to break up with him, and went home angrily. Yun Lang was at a loss and left in the rain.

Jun Xing told Lin Xi that the tunnel was flooded and the car couldn't get through, so the two had to go to the B&B for the night. The two walked into the hotel, only to learn that there was only one last room left. At night, Jun Xing tossed and turned on the sofa in the room, couldn't help but get up and turn off Lin Xi's mobile phone message reminder, but accidentally slipped and fell on the bed. Lin Xi woke up with a start, Jun Xing pretended to take a pillow and went back to the sofa. At this time, Lin Xi's heart beat faster, and the wristband sounded an alarm. She covered her shy self with a quilt in panic.