Skilled technique or enough time (more than one month) is regarded as necessary conditions to complete a handicraft
Xiao Zhou only took 25 days to complete a handicraft, which shows that Xiao Zhou has mastered skill
Either with an extraordinary performance this year, or with the 30 years of working experience in company, can one receive this year's special allowance. Mr. Huang received this year's special allowance, but he has only worked in the company for 10 years, indicating that Mr. Huang's performance of this year is extraordinary.