2020-02-12 how to work efficient

how to work efficiently
1 A timer (you can use Siri to set a timer )
Pomodoro Technique
I use XS MAX (512G)

2 Noisy cancelling headphones:
     SONY 索尼 WH-1000XM2
    购入时间：
    购入渠道 
    价格
3 Thinkpad x1 yoga 2016