• 糹(silk thread; silk fiber)
• 柬(select; letter)

Practice is like drawing silk thread, carefully selecting each strand to make it perfectly smooth.

• 冂(outer frame; enclosure)
• 卄(twenty; many bamboo strips)

Bamboo strips tied together resemble stacked cards forming a book.

• 糹(silk thread; silk fiber)
• 柬(select; letter)

Practice is like drawing silk thread, carefully selecting each strand to make it perfectly smooth.

• 冂(outer frame; enclosure)
• 卄(twenty; many bamboo strips)

Bamboo strips tied together resemble stacked cards forming a book.